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      "group": "Skills library",
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    },
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      "group": "Skills library",
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      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
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      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
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      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
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      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
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      "id": "coverage-41",
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      "subject": "Responsible technology",
      "group": "Skills library",
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      "title": "Compare independent evidence",
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      "example": "Worked example",
      "animation": "4 controlled steps",
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      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
    {
      "id": "coverage-42",
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      "subject": "Design and life skills",
      "group": "Skills library",
      "chapter": "Enrichment pathway",
      "title": "Define success before testing",
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      "example": "Worked example",
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      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
    {
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      "subject": "Digital confidence",
      "group": "Skills library",
      "chapter": "Enrichment pathway",
      "title": "Troubleshoot one variable at a time",
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      "visual": "Workflow diagram",
      "example": "Worked example",
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      "questions": 3,
      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
    {
      "id": "coverage-44",
      "grade": 8,
      "subject": "Create and communicate",
      "group": "Skills library",
      "chapter": "Enrichment pathway",
      "title": "Disagree using reasons",
      "kind": "Skills experience",
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      "example": "Worked example",
      "animation": "4 controlled steps",
      "questions": 3,
      "steps": 4,
      "note": "Original enrichment; not a textbook chapter. The four workflow strands use sequenced visual cards; data and coding use changing data/state diagrams.",
      "animated": true
    },
    {
      "id": "coverage-45",
      "grade": 8,
      "subject": "Data and decisions",
      "group": "Skills library",
      "chapter": "Enrichment pathway",
      "title": "Inspect a percentage claim",
      "kind": "Skills experience",
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      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-295",
      "grade": 4,
      "subject": "Second Language",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "Lesson Revision Studio",
      "kind": "Source-dependent activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Source required",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Exact school material or teacher confirmation required; not complete chapter coverage.",
      "animated": false
    },
    {
      "id": "coverage-296",
      "grade": 4,
      "subject": "Social Studies",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "Diary Evidence Desk",
      "kind": "Source-dependent activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Source required",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Exact school material or teacher confirmation required; not complete chapter coverage.",
      "animated": false
    },
    {
      "id": "coverage-297",
      "grade": 4,
      "subject": "Yoga",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "Warm-up and Asana Safety",
      "kind": "Daily activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-298",
      "grade": 4,
      "subject": "Mathematics",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "2D Shape Maker",
      "kind": "Daily activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-299",
      "grade": 4,
      "subject": "Physical Education",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "Round-and-Round Path",
      "kind": "Daily activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-300",
      "grade": 4,
      "subject": "Computing",
      "group": "Daily learning",
      "chapter": "12 Aug 2026",
      "title": "Worksheet and Notebook Workflow",
      "kind": "Daily activity",
      "url": "/grade-4/daily/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": 0,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-301",
      "grade": 3,
      "subject": "Science",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Celebration Science",
      "kind": "Daily activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-302",
      "grade": 3,
      "subject": "Second Language",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Choose Your Language Stream",
      "kind": "Source-dependent activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Source required",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Exact school material or teacher confirmation required; not complete chapter coverage.",
      "animated": false
    },
    {
      "id": "coverage-303",
      "grade": 3,
      "subject": "English",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Suffix Word Builder",
      "kind": "Daily activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-304",
      "grade": 3,
      "subject": "FL / Additional Subject",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Confirm the Unit Activity",
      "kind": "Source-dependent activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Source required",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Exact school material or teacher confirmation required; not complete chapter coverage.",
      "animated": false
    },
    {
      "id": "coverage-305",
      "grade": 3,
      "subject": "Computer",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Robots: Sense, Think, Act",
      "kind": "Daily activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-306",
      "grade": 3,
      "subject": "Robotics",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Solar Panel and Buzzer",
      "kind": "Daily activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-307",
      "grade": 3,
      "subject": "Social Studies",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Book Checking Readiness",
      "kind": "Daily activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Guided activity",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Diary-linked activity; may overlap academy topics. Not a separate full subject.",
      "animated": false
    },
    {
      "id": "coverage-308",
      "grade": 3,
      "subject": "Mathematics",
      "group": "Daily learning",
      "chapter": "13 Aug 2026",
      "title": "Exercise 5.1 and Tables 2–10",
      "kind": "Source-dependent activity",
      "url": "/grade-3/daily/2026-08-13/",
      "visual": "Shared art + activity visuals",
      "example": "Source required",
      "animation": "Interactive routine; animation not audited",
      "questions": null,
      "steps": null,
      "note": "Exact school material or teacher confirmation required; not complete chapter coverage.",
      "animated": false
    },
    {
      "id": "coverage-309",
      "grade": 3,
      "subject": "Social Studies",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "This Is My India",
      "kind": "Resource",
      "url": "/grade-3/",
      "visual": "Regional illustrations + SVG",
      "example": "Capital examples",
      "animation": "Map/card interactions; not a verified lesson animation",
      "questions": null,
      "steps": null,
      "note": "Standalone school unit; textbook chapter mapping not established in this audit.",
      "animated": false
    },
    {
      "id": "coverage-310",
      "grade": 4,
      "subject": "Science",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "Chapter 9 · The atmosphere",
      "kind": "Resource",
      "url": "/grade-4/science/chapter-9/atmosphere/",
      "visual": "Hero illustration + 15 inline SVGs",
      "example": "Explanations + investigations",
      "animation": "Interactive/animated diagrams; exact state inventory pending",
      "questions": null,
      "steps": null,
      "note": "One chapter topic, not evidence that all of Chapter 9 is covered.",
      "animated": false
    },
    {
      "id": "coverage-311",
      "grade": 4,
      "subject": "Science",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "Atmosphere · Draw and Learn",
      "kind": "Resource",
      "url": "/grade-4/science/chapter-9/atmosphere/practice/",
      "visual": "Illustration + drawing canvas",
      "example": "Guided drawing tasks",
      "animation": "Drawing interaction; not a step animation",
      "questions": null,
      "steps": null,
      "note": "Companion practice; not another chapter.",
      "animated": false
    },
    {
      "id": "coverage-312",
      "grade": 4,
      "subject": "Science",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "Atmosphere games",
      "kind": "Resource",
      "url": "/grade-4/science/chapter-9/atmosphere/games/",
      "visual": "Shared hero + game visuals",
      "example": "Game tasks",
      "animation": "Four interactive games; per-game accuracy audit pending",
      "questions": null,
      "steps": null,
      "note": "Companion games; not another chapter.",
      "animated": false
    },
    {
      "id": "coverage-313",
      "grade": 4,
      "subject": "Science",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "Evaporation and condensation",
      "kind": "Resource",
      "url": "/grade-4/science/evaporation-condensation/",
      "visual": "Hero + particle model",
      "example": "Explanations + investigations",
      "animation": "Particle simulation; current visual accuracy audit pending",
      "questions": null,
      "steps": null,
      "note": "Standalone science lesson with six checks; chapter/edition mapping not verified.",
      "animated": false
    },
    {
      "id": "coverage-314",
      "grade": 4,
      "subject": "Mathematics",
      "group": "Other learning resources",
      "chapter": "Standalone or companion resource",
      "title": "Practice papers: probability, multiplication/factors, 2D shapes, fractions",
      "kind": "Resource",
      "url": "/grade-4/mathematics/practice-papers/",
      "visual": "Four overview diagrams + illustrated PDF answers",
      "example": "Worked solutions in PDFs",
      "animation": "No animation on this resource page",
      "questions": null,
      "steps": null,
      "note": "Four PDF resources, not four fully mapped chapter workflows.",
      "animated": false
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-words:body-names",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Two Little Hands: body words and sentences",
      "title": "Name and notice body words",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-words/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-words:body-senses",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Two Little Hands: body words and sentences",
      "title": "Talk about noticing the world",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-words/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-words:body-one-many",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Two Little Hands: body words and sentences",
      "title": "Use this, these, one and two",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-words/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-actions-and-routines:body-actions",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Parts of the Body: actions and routines",
      "title": "Listen and respond to an action",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-actions-and-routines/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-actions-and-routines:hand-outline",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Parts of the Body: actions and routines",
      "title": "Make and describe an outline",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-actions-and-routines/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-body-actions-and-routines:wash-sequence",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Parts of the Body: actions and routines",
      "title": "Read a familiar routine in order",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/body-actions-and-routines/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-alphabet-and-sounds:letters-a-i",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Alphabet song: names, forms and word sounds",
      "title": "Explore letters A to I",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/alphabet-and-sounds/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-alphabet-and-sounds:letters-j-r",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Alphabet song: names, forms and word sounds",
      "title": "Explore letters J to R",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/alphabet-and-sounds/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-alphabet-and-sounds:letters-s-z",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Alphabet song: names, forms and word sounds",
      "title": "Explore letters S to Z",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/alphabet-and-sounds/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-greetings-and-conversation:greeting-time",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Greetings: kind words and clear sentences",
      "title": "Choose a greeting for the situation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/greetings-and-conversation/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-greetings-and-conversation:greeting-exchange",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Greetings: kind words and clear sentences",
      "title": "Make room for both voices",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/greetings-and-conversation/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-greetings-and-conversation:action-sentences",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Greetings: kind words and clear sentences",
      "title": "Build a small action sentence",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/greetings-and-conversation/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-action-rhyme-and-games:move-words",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Hop a Little: action language and games",
      "title": "Make action words meaningful",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/action-rhyme-and-games/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-action-rhyme-and-games:picture-speaking",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Hop a Little: action language and games",
      "title": "Say what a scene shows",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/action-rhyme-and-games/",
      "visual": "SVG language visual or word cards",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-action-rhyme-and-games:path-instructions",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Hop a Little: action language and games",
      "title": "Follow a route and spell an action",
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      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-family-and-helping:family-words",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "My Family: relationships, helping and pronouns",
      "title": "Use family words with care",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/english/family-and-helping/",
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      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-family-and-helping:family-help",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "My Family: relationships, helping and pronouns",
      "title": "Talk about helping and asking",
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      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-family-and-helping:family-pronouns",
      "grade": 1,
      "subject": "English",
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      "chapter": "My Family: relationships, helping and pronouns",
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      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-story-reading:story-characters",
      "grade": 1,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "The Sparrow Family: story-reading skills",
      "title": "Find characters and actions",
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      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-story-reading:story-order",
      "grade": 1,
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      "group": "Curriculum companion",
      "chapter": "The Sparrow Family: story-reading skills",
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      "questions": 3,
      "steps": 4,
      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-english-my-family-and-me-story-reading:story-reason",
      "grade": 1,
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      "note": "Original skills companion for a named reading in Mridang Unit 1, My Family and Me (Reprint 2026–27). Open the official source for its poem/story. HelioLearn supplies original analogous language and activities; it does not reproduce the reading or claim every textbook exercise. An adult reads prompts and checks speaking, letter formation and practical tasks. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-bicycle-reading-and-sounds:g2-bicycle-parts",
      "grade": 2,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "My Bicycle: vocabulary, clues and short a",
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      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-bicycle-reading-and-sounds:g2-reading-clues",
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      "group": "Curriculum companion",
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      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-bicycle-reading-and-sounds:g2-short-a",
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      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-pictures-sounds-and-opposites:g2-picture-evidence",
      "grade": 2,
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      "group": "Curriculum companion",
      "chapter": "Picture Reading: evidence, short e and opposites",
      "title": "Describe a picture with evidence",
      "kind": "Curriculum lesson",
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      "visual": "SVG language visual or word cards",
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      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-pictures-sounds-and-opposites:g2-short-e",
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      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-pictures-sounds-and-opposites:g2-opposite-words",
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      "kind": "Curriculum lesson",
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      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-stories-in-order:g2-story-people",
      "grade": 2,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "OUT! OUT!: people, sequence and reasons",
      "title": "Find people and actions in a story",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/english/stories-in-order/",
      "visual": "SVG language visual or word cards",
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      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-stories-in-order:g2-story-order",
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      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-stories-in-order:g2-story-reasons",
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      "chapter": "OUT! OUT!: people, sequence and reasons",
      "title": "Explain a problem and a response",
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      "animation": "4 controlled visual steps",
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      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-sentences-and-conversation:g2-join-and",
      "grade": 2,
      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Fun with Friends: sentences, speaking and imagination",
      "title": "Join ideas with and",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/english/sentences-and-conversation/",
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      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-sentences-and-conversation:g2-talk-and-report",
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      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Fun with Friends: sentences, speaking and imagination",
      "title": "Ask, listen and report a game",
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      "questions": 3,
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      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-english-fun-with-friends-sentences-and-conversation:g2-imagine-and-write",
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      "subject": "English",
      "group": "Curriculum companion",
      "chapter": "Fun with Friends: sentences, speaking and imagination",
      "title": "Plan an imaginative description",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/english/sentences-and-conversation/",
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      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original companion for Mridang Unit 1, Fun with Friends (Reprint 2026–27). Official poems, story and pictures remain in their linked source. This companion uses original analogous texts and diagrams; it does not reproduce the source or claim every exercise answer. Use the unit map and adult checks for the full planned outcome sequence. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-objects-properties:g6-materials-objects",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Objects and Properties (1 of 3)",
      "title": "Distinguish objects from their materials",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-objects-properties/",
      "visual": "SVG scientific model",
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      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-objects-properties:g6-materials-classify",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Objects and Properties (1 of 3)",
      "title": "Classify using a clear rule",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-objects-properties/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-objects-properties:g6-materials-surface",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Objects and Properties (1 of 3)",
      "title": "Compare appearance and softness",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-objects-properties/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-testing-materials:g6-materials-light",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Tests and Measurements (2 of 3)",
      "title": "Test what can be seen through a sample",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-testing-materials/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-testing-materials:g6-materials-water",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Tests and Measurements (2 of 3)",
      "title": "Compare how materials mix with water",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-testing-materials/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-testing-materials:g6-materials-mass",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Tests and Measurements (2 of 3)",
      "title": "Measure and compare mass",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-testing-materials/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-matter-design:g6-materials-volume",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Volume, Matter and Design (3 of 3)",
      "title": "Distinguish volume from capacity",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-matter-design/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-matter-design:g6-materials-matter",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Volume, Matter and Design (3 of 3)",
      "title": "Use evidence that air is matter",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-matter-design/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-matter-design:g6-materials-design",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Materials Around Us — Volume, Matter and Design (3 of 3)",
      "title": "Choose materials using evidence",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/materials-around-us-matter-design/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-measurement-of-length-and-motion:length-units",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Length and Motion",
      "title": "Use units that everyone can compare",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/measurement-of-length-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 6 Chapter 5 (Reprint 2026–27). Three core concept lessons; not every textbook example, activity or exercise. All diagrams are original schematic models. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-measurement-of-length-and-motion:read-a-scale",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Length and Motion",
      "title": "Measure carefully and check the starting mark",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/measurement-of-length-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 6 Chapter 5 (Reprint 2026–27). Three core concept lessons; not every textbook example, activity or exercise. All diagrams are original schematic models. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-measurement-of-length-and-motion:describe-motion",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Length and Motion",
      "title": "Describe motion using a reference",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/measurement-of-length-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 6 Chapter 5 (Reprint 2026–27). Three core concept lessons; not every textbook example, activity or exercise. All diagrams are original schematic models. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g7-science-measurement-of-time-and-motion:measure-time",
      "grade": 7,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Time and Motion",
      "title": "Time repeating motion carefully",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-7/science/measurement-of-time-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 7 Chapter 8 (Reprint 2026–27). Covers timing, oscillations, average speed and comparisons; not every historical clock example or textbook exercise. Supplied motion data are illustrative. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g7-science-measurement-of-time-and-motion:calculate-speed",
      "grade": 7,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Time and Motion",
      "title": "Calculate speed with meaningful units",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-7/science/measurement-of-time-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 7 Chapter 8 (Reprint 2026–27). Covers timing, oscillations, average speed and comparisons; not every historical clock example or textbook exercise. Supplied motion data are illustrative. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g7-science-measurement-of-time-and-motion:compare-journeys",
      "grade": 7,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Measurement of Time and Motion",
      "title": "Compare journeys using evidence",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-7/science/measurement-of-time-and-motion/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 7 Chapter 8 (Reprint 2026–27). Covers timing, oscillations, average speed and comparisons; not every historical clock example or textbook exercise. Supplied motion data are illustrative. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g8-science-exploring-forces:force-effects",
      "grade": 8,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Exploring Forces",
      "title": "Recognise what a force can change",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-8/science/exploring-forces/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 8 Chapter 5 (Reprint 2026–27). Covers force effects, contact/friction evidence and non-contact forces; not every activity, spring-balance procedure or textbook exercise. No dangerous physical experiment is required. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g8-science-exploring-forces:contact-and-friction",
      "grade": 8,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Exploring Forces",
      "title": "Use friction evidence fairly",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-8/science/exploring-forces/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 8 Chapter 5 (Reprint 2026–27). Covers force effects, contact/friction evidence and non-contact forces; not every activity, spring-balance procedure or textbook exercise. No dangerous physical experiment is required. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g8-science-exploring-forces:non-contact-forces",
      "grade": 8,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Exploring Forces",
      "title": "Distinguish forces that act across a gap",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-8/science/exploring-forces/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion to Curiosity Grade 8 Chapter 5 (Reprint 2026–27). Covers force effects, contact/friction evidence and non-contact forces; not every activity, spring-balance procedure or textbook exercise. No dangerous physical experiment is required. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-maths-making-ten:make-ten",
      "grade": 1,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Making 10",
      "title": "Fill a ten-frame",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/mathematics/making-ten/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering ten-bonds, teen numbers and comparing teens. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-maths-making-ten:teen-numbers",
      "grade": 1,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Making 10",
      "title": "Build ten and some more",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/mathematics/making-ten/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering ten-bonds, teen numbers and comparing teens. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g1-maths-making-ten:compare-teens",
      "grade": 1,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Making 10",
      "title": "Compare two teen numbers",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-1/mathematics/making-ten/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering ten-bonds, teen numbers and comparing teens. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-maths-decoration-for-festival:add-parts",
      "grade": 2,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Decoration for Festival",
      "title": "Add tens and ones",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/mathematics/decoration-for-festival/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering two-digit addition and subtraction using place value and regrouping. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-maths-decoration-for-festival:make-new-ten",
      "grade": 2,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Decoration for Festival",
      "title": "Regroup ten ones",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/mathematics/decoration-for-festival/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering two-digit addition and subtraction using place value and regrouping. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g2-maths-decoration-for-festival:subtract-parts",
      "grade": 2,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Decoration for Festival",
      "title": "Exchange a ten to subtract",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-2/mathematics/decoration-for-festival/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering two-digit addition and subtraction using place value and regrouping. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g3-maths-fair-share:equal-parts",
      "grade": 3,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fair Share",
      "title": "Make fair parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-3/mathematics/fair-share/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equal parts, fraction notation and halves or quarters of collections. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g3-maths-fair-share:read-fractions",
      "grade": 3,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fair Share",
      "title": "Count equal parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-3/mathematics/fair-share/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equal parts, fraction notation and halves or quarters of collections. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g3-maths-fair-share:share-groups",
      "grade": 3,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fair Share",
      "title": "Find a fraction of a group",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-3/mathematics/fair-share/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equal parts, fraction notation and halves or quarters of collections. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g4-maths-fun-with-symmetry:mirror-lines",
      "grade": 4,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fun with Symmetry",
      "title": "Test a mirror line",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-4/mathematics/fun-with-symmetry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering line symmetry, grid reflections and symmetry counts for familiar shapes. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g4-maths-fun-with-symmetry:complete-reflections",
      "grade": 4,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fun with Symmetry",
      "title": "Complete a reflected pattern",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-4/mathematics/fun-with-symmetry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering line symmetry, grid reflections and symmetry counts for familiar shapes. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g4-maths-fun-with-symmetry:count-symmetry",
      "grade": 4,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fun with Symmetry",
      "title": "Count symmetry lines",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-4/mathematics/fun-with-symmetry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering line symmetry, grid reflections and symmetry counts for familiar shapes. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g5-maths-fractions:equivalent",
      "grade": 5,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fractions",
      "title": "Rename the same fraction",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-5/mathematics/fractions/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equivalent fractions, comparisons and addition after renaming. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g5-maths-fractions:compare",
      "grade": 5,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fractions",
      "title": "Compare using equal-sized parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-5/mathematics/fractions/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equivalent fractions, comparisons and addition after renaming. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g5-maths-fractions:add-fractions",
      "grade": 5,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Fractions",
      "title": "Add equal-sized fraction parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-5/mathematics/fractions/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original chapter companion covering equivalent fractions, comparisons and addition after renaming. It does not reproduce or solve every textbook exercise. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g9-maths-introduction-to-polynomials:terms",
      "grade": 9,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to polynomials",
      "title": "Read the structure of an expression",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-9/mathematics/introduction-to-polynomials/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "An introductory companion to the revised Grade 9 syllabus: terms and degree, substitution and linear models. This is a syllabus-topic map, not a verified whole-textbook chapter or full exercise solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g9-maths-introduction-to-polynomials:substitution",
      "grade": 9,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to polynomials",
      "title": "Evaluate and check a value",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-9/mathematics/introduction-to-polynomials/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "An introductory companion to the revised Grade 9 syllabus: terms and degree, substitution and linear models. This is a syllabus-topic map, not a verified whole-textbook chapter or full exercise solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g9-maths-introduction-to-polynomials:linear-models",
      "grade": 9,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to polynomials",
      "title": "Build a linear model",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-9/mathematics/introduction-to-polynomials/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "An introductory companion to the revised Grade 9 syllabus: terms and degree, substitution and linear models. This is a syllabus-topic map, not a verified whole-textbook chapter or full exercise solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g11-maths-sets:membership",
      "grade": 11,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Sets",
      "title": "Describe membership precisely",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-11/mathematics/sets/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion covering membership, subsets, union, intersection and complement with finite examples. Infinite sets, intervals and the full textbook exercise map still need further lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g11-maths-sets:operations",
      "grade": 11,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Sets",
      "title": "Combine sets without double counting",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-11/mathematics/sets/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion covering membership, subsets, union, intersection and complement with finite examples. Infinite sets, intervals and the full textbook exercise map still need further lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g11-maths-sets:complements",
      "grade": 11,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Sets",
      "title": "Use the universe when taking a complement",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-11/mathematics/sets/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion covering membership, subsets, union, intersection and complement with finite examples. Infinite sets, intervals and the full textbook exercise map still need further lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g12-maths-relations-and-functions:relations",
      "grade": 12,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Relations and functions",
      "title": "Test the properties of a relation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-12/mathematics/relations-and-functions/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion introducing relation properties and testing one-one, onto and bijective functions with finite examples. General proofs and the full exercise map remain additional work. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g12-maths-relations-and-functions:functions",
      "grade": 12,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Relations and functions",
      "title": "Separate domain, codomain and range",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-12/mathematics/relations-and-functions/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion introducing relation properties and testing one-one, onto and bijective functions with finite examples. General proofs and the full exercise map remain additional work. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g12-maths-relations-and-functions:bijections",
      "grade": 12,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Relations and functions",
      "title": "Justify a bijection",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-12/mathematics/relations-and-functions/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "A chapter companion introducing relation properties and testing one-one, onto and bijective functions with finite examples. General proofs and the full exercise map remain additional work. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-evidence-balancing-patterns:reaction-evidence",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Evidence, Balancing and Patterns",
      "title": "Read evidence and chemical equations",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-evidence-balancing-patterns/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-evidence-balancing-patterns:reaction-balancing",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Evidence, Balancing and Patterns",
      "title": "Balance by conserving atom counts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-evidence-balancing-patterns/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-evidence-balancing-patterns:reaction-patterns",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Evidence, Balancing and Patterns",
      "title": "Recognise combination and decomposition",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-evidence-balancing-patterns/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-exchange-energy-redox:reaction-exchange",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Exchange, Energy and Redox",
      "title": "Explain displacement and precipitation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-exchange-energy-redox/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-exchange-energy-redox:reaction-energy",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Exchange, Energy and Redox",
      "title": "Reason about energy transfer",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-exchange-energy-redox/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-exchange-energy-redox:reaction-redox",
      "grade": 10,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Chemical Reactions and Equations — Exchange, Energy and Redox",
      "title": "Connect oxidation, reduction and everyday effects",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/science/chemical-reactions-exchange-energy-redox/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-polynomials:polynomial-zeros",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Polynomials",
      "title": "Zeroes and the x-axis",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/polynomials/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Three lessons cover zeroes, simple quadratic factorisation and coefficient relations. A full range of graph shapes and every textbook exercise remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-polynomials:polynomial-factors",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Polynomials",
      "title": "Factor a quadratic to find its zeroes",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/polynomials/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Three lessons cover zeroes, simple quadratic factorisation and coefficient relations. A full range of graph shapes and every textbook exercise remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-polynomials:polynomial-coefficients",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Polynomials",
      "title": "Relate zeroes to coefficients",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/polynomials/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Three lessons cover zeroes, simple quadratic factorisation and coefficient relations. A full range of graph shapes and every textbook exercise remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-pair-of-linear-equations-in-two-variables:linear-graphs",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Pair of Linear Equations in Two Variables",
      "title": "Read two lines as two conditions",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/pair-of-linear-equations-in-two-variables/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers graph interpretation, substitution, elimination and consistency through selected original problems. It is not an exhaustive word-problem or textbook solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-pair-of-linear-equations-in-two-variables:linear-substitution",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Pair of Linear Equations in Two Variables",
      "title": "Substitute one equation into the other",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/pair-of-linear-equations-in-two-variables/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers graph interpretation, substitution, elimination and consistency through selected original problems. It is not an exhaustive word-problem or textbook solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-pair-of-linear-equations-in-two-variables:linear-elimination",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Pair of Linear Equations in Two Variables",
      "title": "Eliminate a variable and classify the result",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/pair-of-linear-equations-in-two-variables/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers graph interpretation, substitution, elimination and consistency through selected original problems. It is not an exhaustive word-problem or textbook solution bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-quadratic-equations:quadratic-model",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Quadratic Equations",
      "title": "Build and recognise a quadratic equation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/quadratic-equations/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers modelling, factorisation and discriminant/formula use. It gives selected reasoning and examples rather than every contextual problem or a full derivation of the quadratic formula. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-quadratic-equations:quadratic-factor",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Quadratic Equations",
      "title": "Solve by factorisation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/quadratic-equations/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers modelling, factorisation and discriminant/formula use. It gives selected reasoning and examples rather than every contextual problem or a full derivation of the quadratic formula. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-quadratic-equations:quadratic-discriminant",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Quadratic Equations",
      "title": "Use the discriminant and formula",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/quadratic-equations/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers modelling, factorisation and discriminant/formula use. It gives selected reasoning and examples rather than every contextual problem or a full derivation of the quadratic formula. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-arithmetic-progressions:ap-pattern",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Arithmetic Progressions",
      "title": "Recognise a constant difference",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/arithmetic-progressions/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers constant differences, term membership and finite sums, with selected contextual applications. It is not an exhaustive exercise bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-arithmetic-progressions:ap-nth",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Arithmetic Progressions",
      "title": "Find an AP term without listing them all",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/arithmetic-progressions/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers constant differences, term membership and finite sums, with selected contextual applications. It is not an exhaustive exercise bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-arithmetic-progressions:ap-sum",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Arithmetic Progressions",
      "title": "Add many AP terms efficiently",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/arithmetic-progressions/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers constant differences, term membership and finite sums, with selected contextual applications. It is not an exhaustive exercise bank. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-triangles:triangles-similarity",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Triangles",
      "title": "Match corresponding parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/triangles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers correspondence, similarity criteria, BPT applications and indirect measurement. Complete deductive proofs of BPT and all similarity criteria, and every textbook problem, are still outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-triangles:triangles-bpt",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Triangles",
      "title": "Use a parallel line inside a triangle",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/triangles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers correspondence, similarity criteria, BPT applications and indirect measurement. Complete deductive proofs of BPT and all similarity criteria, and every textbook problem, are still outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-triangles:triangles-scale",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Triangles",
      "title": "Use similarity to measure indirectly",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/triangles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers correspondence, similarity criteria, BPT applications and indirect measurement. Complete deductive proofs of BPT and all similarity criteria, and every textbook problem, are still outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-coordinate-geometry:coordinate-distance",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Coordinate Geometry",
      "title": "Measure distance between two points",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/coordinate-geometry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers distance, internal section and midpoint applications. Coordinate proofs of every shape property and all textbook exercises remain to be added. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-coordinate-geometry:coordinate-section",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Coordinate Geometry",
      "title": "Divide a segment in a given ratio",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/coordinate-geometry/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers distance, internal section and midpoint applications. Coordinate proofs of every shape property and all textbook exercises remain to be added. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-coordinate-geometry:coordinate-midpoint",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Coordinate Geometry",
      "title": "Use midpoint and distance checks together",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/coordinate-geometry/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers distance, internal section and midpoint applications. Coordinate proofs of every shape property and all textbook exercises remain to be added. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-introduction-to-trigonometry:trig-ratios",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to Trigonometry",
      "title": "Build ratios from a right triangle",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/introduction-to-trigonometry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers right-triangle ratios, standard acute-angle values and basic identities. It does not exhaust all identity proofs or textbook exercises. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-introduction-to-trigonometry:trig-angles",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to Trigonometry",
      "title": "Derive familiar angle values",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/introduction-to-trigonometry/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers right-triangle ratios, standard acute-angle values and basic identities. It does not exhaust all identity proofs or textbook exercises. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-introduction-to-trigonometry:trig-identities",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Introduction to Trigonometry",
      "title": "Use identities with conditions",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/introduction-to-trigonometry/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers right-triangle ratios, standard acute-angle values and basic identities. It does not exhaust all identity proofs or textbook exercises. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-some-applications-of-trigonometry:heights-elevation",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Some Applications of Trigonometry",
      "title": "Model one angle of elevation",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/some-applications-of-trigonometry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers level-ground height models, observation height, depression and a same-side two-position model. Other configurations and practical measurement uncertainty require additional lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-some-applications-of-trigonometry:heights-eye-level",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Some Applications of Trigonometry",
      "title": "Account for eye height and depression",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/some-applications-of-trigonometry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers level-ground height models, observation height, depression and a same-side two-position model. Other configurations and practical measurement uncertainty require additional lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-some-applications-of-trigonometry:heights-two-positions",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Some Applications of Trigonometry",
      "title": "Combine observations from two positions",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/some-applications-of-trigonometry/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers level-ground height models, observation height, depression and a same-side two-position model. Other configurations and practical measurement uncertainty require additional lessons. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-circles:circle-tangent",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Circles",
      "title": "Locate the radius perpendicular to a tangent",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/circles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers the radius–tangent relation, equal tangent lengths with RHS reasoning, and a tangent-angle consequence. It provides a concise proof explanation, not every textbook proof or exercise configuration. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-circles:circle-equal-tangents",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Circles",
      "title": "Compare tangents from one external point",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/circles/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers the radius–tangent relation, equal tangent lengths with RHS reasoning, and a tangent-angle consequence. It provides a concise proof explanation, not every textbook proof or exercise configuration. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-circles:circle-angles",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Circles",
      "title": "Connect central and tangent angles",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/circles/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers the radius–tangent relation, equal tangent lengths with RHS reasoning, and a tangent-angle consequence. It provides a concise proof explanation, not every textbook proof or exercise configuration. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-areas-related-to-circles:circle-sector-area",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Areas Related to Circles",
      "title": "Find a sector area as a fraction",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/areas-related-to-circles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers sectors, right-angle minor segments and selected composite areas. Other central-angle triangle calculations and all textbook exercise figures are not claimed complete. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-areas-related-to-circles:circle-segment-area",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Areas Related to Circles",
      "title": "Subtract a triangle to get a segment",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/areas-related-to-circles/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers sectors, right-angle minor segments and selected composite areas. Other central-angle triangle calculations and all textbook exercise figures are not claimed complete. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-areas-related-to-circles:circle-composite-area",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Areas Related to Circles",
      "title": "Combine circular regions without double counting",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/areas-related-to-circles/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers sectors, right-angle minor segments and selected composite areas. Other central-angle triangle calculations and all textbook exercise figures are not claimed complete. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-surface-areas-and-volumes:solid-exposed-area",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Surface Areas and Volumes",
      "title": "Count only exposed surfaces",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/surface-areas-and-volumes/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers selected combinations of solids and exposed surfaces. The final remoulding lesson is labelled an extension; it is not a claim about the current prescribed exercise list. Hollow-object and every textbook configuration coverage remain pending. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-surface-areas-and-volumes:solid-volume",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Surface Areas and Volumes",
      "title": "Add volumes of solid parts",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/surface-areas-and-volumes/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers selected combinations of solids and exposed surfaces. The final remoulding lesson is labelled an extension; it is not a claim about the current prescribed exercise list. Hollow-object and every textbook configuration coverage remain pending. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-surface-areas-and-volumes:solid-conservation",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Surface Areas and Volumes",
      "title": "Use volume conservation in an extension",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/surface-areas-and-volumes/",
      "visual": "SVG mathematical model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers selected combinations of solids and exposed surfaces. The final remoulding lesson is labelled an extension; it is not a claim about the current prescribed exercise list. Hollow-object and every textbook configuration coverage remain pending. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-statistics:statistics-mean",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Statistics",
      "title": "Estimate a grouped mean",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/statistics/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers direct-method grouped mean and standard equal-width grouped mode/median calculations. Assumed-mean and step-deviation methods, irregular-class cases and all textbook exercises remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-statistics:statistics-mode",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Statistics",
      "title": "Estimate a grouped mode",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/statistics/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers direct-method grouped mean and standard equal-width grouped mode/median calculations. Assumed-mean and step-deviation methods, irregular-class cases and all textbook exercises remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-statistics:statistics-median",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Statistics",
      "title": "Find the median class by cumulative frequency",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/statistics/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers direct-method grouped mean and standard equal-width grouped mode/median calculations. Assumed-mean and step-deviation methods, irregular-class cases and all textbook exercises remain outside this companion. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-probability:probability-outcomes",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Probability",
      "title": "Count equally likely outcomes",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/probability/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers finite equally likely outcomes, complements and small organised sample spaces. The coin-spinner examples state independence explicitly. Biased experiments and all textbook exercise contexts are not covered. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-probability:probability-complement",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Probability",
      "title": "Use complements and bounds",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/probability/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers finite equally likely outcomes, complements and small organised sample spaces. The coin-spinner examples state independence explicitly. Biased experiments and all textbook exercise contexts are not covered. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g10-maths-probability:probability-organised-counting",
      "grade": 10,
      "subject": "Mathematics",
      "group": "Curriculum companion",
      "chapter": "Probability",
      "title": "Organise a sample space without losing outcomes",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-10/mathematics/probability/",
      "visual": "SVG equation / reasoning text sequence",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Original learning companion, not full textbook exercise solutions. Covers finite equally likely outcomes, complements and small organised sample spaces. The coin-spinner examples state independence explicitly. Biased experiments and all textbook exercise contexts are not covered. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-evidence-scales-tools:g6-temperature-evidence",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Evidence, Scales and Instruments (1 of 3)",
      "title": "Use measurement beyond touch",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-evidence-scales-tools/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-evidence-scales-tools:g6-temperature-units",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Evidence, Scales and Instruments (1 of 3)",
      "title": "Read temperature scales and symbols",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-evidence-scales-tools/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-evidence-scales-tools:g6-temperature-device",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Evidence, Scales and Instruments (1 of 3)",
      "title": "Choose a suitable thermometer",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-evidence-scales-tools/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-read-temperature-scales:g6-temperature-range",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Read Temperature Scales (2 of 3)",
      "title": "Find an instrument’s range",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-read-temperature-scales/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-read-temperature-scales:g6-temperature-divisions",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Read Temperature Scales (2 of 3)",
      "title": "Work out the value of one interval",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-read-temperature-scales/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-read-temperature-scales:g6-temperature-reading",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Read Temperature Scales (2 of 3)",
      "title": "Read a marked temperature scale",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-read-temperature-scales/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 2 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-measure-compare-data:g6-temperature-method",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Measure and Compare Data (3 of 3)",
      "title": "Plan a correct water measurement",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-measure-compare-data/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-measure-compare-data:g6-temperature-quality",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Measure and Compare Data (3 of 3)",
      "title": "Investigate different readings",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-measure-compare-data/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-measure-compare-data:g6-temperature-air",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "Temperature and its Measurement — Measure and Compare Data (3 of 3)",
      "title": "Interpret daily air-temperature data",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/temperature-measure-compare-data/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 3 of a linked nine-lesson original sequence mapped to the core measurement outcomes of Curiosity Chapter 7. This companion alone is not a complete chapter; source activities and exercise concepts are adapted to original examples and supplied data. It does not provide every textbook exercise solution, health diagnosis or learner heating experiment. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-water-states-evaporation-condensation:g6-water-states",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "A Journey through States of Water — States, Evaporation and Condensation (1 of 3)",
      "title": "Compare three states of water",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/water-states-evaporation-condensation/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
      "animation": "4 controlled visual steps",
      "questions": 3,
      "steps": 4,
      "note": "Part 1 of a linked nine-lesson original sequence mapped to the core outcomes of Curiosity Chapter 8. This companion alone is not a complete chapter. Source activities and exercise concepts are adapted to original safe examples and supplied data; this is not every textbook exercise solution or a food/drinking-water safety validation. Shared 3 readiness and 12 final-check questions are counted once per companion. Independent teacher review and narrated video pending.",
      "animated": true
    },
    {
      "id": "cbse-2026-27-g6-science-water-states-evaporation-condensation:g6-water-evaporation",
      "grade": 6,
      "subject": "Science",
      "group": "Curriculum companion",
      "chapter": "A Journey through States of Water — States, Evaporation and Condensation (1 of 3)",
      "title": "Explain water disappearing from view",
      "kind": "Curriculum lesson",
      "url": "/learn/grade-6/science/water-states-evaporation-condensation/",
      "visual": "SVG scientific model",
      "example": "Original worked example",
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      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/fecu106.pdf"
      ],
      "scope_note": "Part 2 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "g6-materials-light",
        "g6-materials-water",
        "g6-materials-mass"
      ]
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-matter-design",
      "grade": 6,
      "subject": "Science",
      "title": "Materials Around Us — Volume, Matter and Design (3 of 3)",
      "slug": "materials-around-us-matter-design",
      "url": "/learn/grade-6/science/materials-around-us-matter-design/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/fecu106.pdf"
      ],
      "scope_note": "Part 3 of a linked 9-lesson original sequence mapped to the core outcomes of Curiosity Chapter 6. This 3-lesson companion alone is not a complete chapter. Practice is original; it does not reproduce or answer every textbook exercise or enrichment box. Teacher and independent content review remain separate gates.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "g6-materials-volume",
        "g6-materials-matter",
        "g6-materials-design"
      ]
    },
    {
      "id": "cbse-2026-27-g6-science-measurement-of-length-and-motion",
      "grade": 6,
      "subject": "Science",
      "title": "Measurement of Length and Motion",
      "slug": "measurement-of-length-and-motion",
      "url": "/learn/grade-6/science/measurement-of-length-and-motion/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/fecu105.pdf"
      ],
      "scope_note": "Original chapter companion to Curiosity Grade 6 Chapter 5 (Reprint 2026–27). Three core concept lessons; not every textbook example, activity or exercise. All diagrams are original schematic models.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "length-units",
        "read-a-scale",
        "describe-motion"
      ]
    },
    {
      "id": "cbse-2026-27-g7-science-measurement-of-time-and-motion",
      "grade": 7,
      "subject": "Science",
      "title": "Measurement of Time and Motion",
      "slug": "measurement-of-time-and-motion",
      "url": "/learn/grade-7/science/measurement-of-time-and-motion/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/gecu108.pdf"
      ],
      "scope_note": "Original chapter companion to Curiosity Grade 7 Chapter 8 (Reprint 2026–27). Covers timing, oscillations, average speed and comparisons; not every historical clock example or textbook exercise. Supplied motion data are illustrative.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "measure-time",
        "calculate-speed",
        "compare-journeys"
      ]
    },
    {
      "id": "cbse-2026-27-g8-science-exploring-forces",
      "grade": 8,
      "subject": "Science",
      "title": "Exploring Forces",
      "slug": "exploring-forces",
      "url": "/learn/grade-8/science/exploring-forces/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/hecu105.pdf"
      ],
      "scope_note": "Original chapter companion to Curiosity Grade 8 Chapter 5 (Reprint 2026–27). Covers force effects, contact/friction evidence and non-contact forces; not every activity, spring-balance procedure or textbook exercise. No dangerous physical experiment is required.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "force-effects",
        "contact-and-friction",
        "non-contact-forces"
      ]
    },
    {
      "id": "cbse-2026-27-g1-maths-making-ten",
      "grade": 1,
      "subject": "Mathematics",
      "title": "Making 10",
      "slug": "making-ten",
      "url": "/learn/grade-1/mathematics/making-ten/",
      "source_urls": [
        "https://www.ncert.nic.in/textbook/pdf/aejm1ps.pdf"
      ],
      "scope_note": "Original chapter companion covering ten-bonds, teen numbers and comparing teens. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "make-ten",
        "teen-numbers",
        "compare-teens"
      ]
    },
    {
      "id": "cbse-2026-27-g2-maths-decoration-for-festival",
      "grade": 2,
      "subject": "Mathematics",
      "title": "Decoration for Festival",
      "slug": "decoration-for-festival",
      "url": "/learn/grade-2/mathematics/decoration-for-festival/",
      "source_urls": [
        "https://www.ncert.nic.in/textbook/pdf/bejm1ps.pdf"
      ],
      "scope_note": "Original chapter companion covering two-digit addition and subtraction using place value and regrouping. It does not reproduce or solve every textbook exercise. An adult should read prompts aloud and support handling small objects safely.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "add-parts",
        "make-new-ten",
        "subtract-parts"
      ]
    },
    {
      "id": "cbse-2026-27-g3-maths-fair-share",
      "grade": 3,
      "subject": "Mathematics",
      "title": "Fair Share",
      "slug": "fair-share",
      "url": "/learn/grade-3/mathematics/fair-share/",
      "source_urls": [
        "https://www.ncert.nic.in/textbook/pdf/cemm1ps.pdf"
      ],
      "scope_note": "Original chapter companion covering equal parts, fraction notation and halves or quarters of collections. It does not reproduce or solve every textbook exercise.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "equal-parts",
        "read-fractions",
        "share-groups"
      ]
    },
    {
      "id": "cbse-2026-27-g4-maths-fun-with-symmetry",
      "grade": 4,
      "subject": "Mathematics",
      "title": "Fun with Symmetry",
      "slug": "fun-with-symmetry",
      "url": "/learn/grade-4/mathematics/fun-with-symmetry/",
      "source_urls": [
        "https://www.ncert.nic.in/textbook/pdf/demm1ps.pdf"
      ],
      "scope_note": "Original chapter companion covering line symmetry, grid reflections and symmetry counts for familiar shapes. It does not reproduce or solve every textbook exercise.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "mirror-lines",
        "complete-reflections",
        "count-symmetry"
      ]
    },
    {
      "id": "cbse-2026-27-g5-maths-fractions",
      "grade": 5,
      "subject": "Mathematics",
      "title": "Fractions",
      "slug": "fractions",
      "url": "/learn/grade-5/mathematics/fractions/",
      "source_urls": [
        "https://www.ncert.nic.in/textbook/pdf/eemm1ps.pdf"
      ],
      "scope_note": "Original chapter companion covering equivalent fractions, comparisons and addition after renaming. It does not reproduce or solve every textbook exercise.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "equivalent",
        "compare",
        "add-fractions"
      ]
    },
    {
      "id": "cbse-2026-27-g9-maths-introduction-to-polynomials",
      "grade": 9,
      "subject": "Mathematics",
      "title": "Introduction to polynomials",
      "slug": "introduction-to-polynomials",
      "url": "/learn/grade-9/mathematics/introduction-to-polynomials/",
      "source_urls": [
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1IX_2026-27.pdf"
      ],
      "scope_note": "An introductory companion to the revised Grade 9 syllabus: terms and degree, substitution and linear models. This is a syllabus-topic map, not a verified whole-textbook chapter or full exercise solution bank.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "terms",
        "substitution",
        "linear-models"
      ]
    },
    {
      "id": "cbse-2026-27-g11-maths-sets",
      "grade": 11,
      "subject": "Mathematics",
      "title": "Sets",
      "slug": "sets",
      "url": "/learn/grade-11/mathematics/sets/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/kemh101.pdf"
      ],
      "scope_note": "A chapter companion covering membership, subsets, union, intersection and complement with finite examples. Infinite sets, intervals and the full textbook exercise map still need further lessons.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "membership",
        "operations",
        "complements"
      ]
    },
    {
      "id": "cbse-2026-27-g12-maths-relations-and-functions",
      "grade": 12,
      "subject": "Mathematics",
      "title": "Relations and functions",
      "slug": "relations-and-functions",
      "url": "/learn/grade-12/mathematics/relations-and-functions/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/lemh101.pdf"
      ],
      "scope_note": "A chapter companion introducing relation properties and testing one-one, onto and bijective functions with finite examples. General proofs and the full exercise map remain additional work.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "relations",
        "functions",
        "bijections"
      ]
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-evidence-balancing-patterns",
      "grade": 10,
      "subject": "Science",
      "title": "Chemical Reactions and Equations — Evidence, Balancing and Patterns",
      "slug": "chemical-reactions-evidence-balancing-patterns",
      "url": "/learn/grade-10/science/chemical-reactions-evidence-balancing-patterns/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jesc101.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Science_SecP1_2026-27.pdf"
      ],
      "scope_note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "reaction-evidence",
        "reaction-balancing",
        "reaction-patterns"
      ]
    },
    {
      "id": "cbse-2026-27-g10-science-chemical-reactions-exchange-energy-redox",
      "grade": 10,
      "subject": "Science",
      "title": "Chemical Reactions and Equations — Exchange, Energy and Redox",
      "slug": "chemical-reactions-exchange-energy-redox",
      "url": "/learn/grade-10/science/chemical-reactions-exchange-energy-redox/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jesc101.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Science_SecP1_2026-27.pdf"
      ],
      "scope_note": "Original learning companion for selected Chemical Reactions and Equations outcomes. The two parts cover introductory theory through paper models and supplied observations. This is partial chapter coverage: it does not replace the full NCERT text, all exercises, laboratory practicals, teacher assessment or all transfer tasks. No home chemical experiment is assigned.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "reaction-exchange",
        "reaction-energy",
        "reaction-redox"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-polynomials",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Polynomials",
      "slug": "polynomials",
      "url": "/learn/grade-10/mathematics/polynomials/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh102.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Three lessons cover zeroes, simple quadratic factorisation and coefficient relations. A full range of graph shapes and every textbook exercise remain outside this companion.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "polynomial-zeros",
        "polynomial-factors",
        "polynomial-coefficients"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-pair-of-linear-equations-in-two-variables",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Pair of Linear Equations in Two Variables",
      "slug": "pair-of-linear-equations-in-two-variables",
      "url": "/learn/grade-10/mathematics/pair-of-linear-equations-in-two-variables/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh103.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers graph interpretation, substitution, elimination and consistency through selected original problems. It is not an exhaustive word-problem or textbook solution bank.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "linear-graphs",
        "linear-substitution",
        "linear-elimination"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-quadratic-equations",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Quadratic Equations",
      "slug": "quadratic-equations",
      "url": "/learn/grade-10/mathematics/quadratic-equations/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh104.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers modelling, factorisation and discriminant/formula use. It gives selected reasoning and examples rather than every contextual problem or a full derivation of the quadratic formula.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "quadratic-model",
        "quadratic-factor",
        "quadratic-discriminant"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-arithmetic-progressions",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Arithmetic Progressions",
      "slug": "arithmetic-progressions",
      "url": "/learn/grade-10/mathematics/arithmetic-progressions/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh105.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers constant differences, term membership and finite sums, with selected contextual applications. It is not an exhaustive exercise bank.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "ap-pattern",
        "ap-nth",
        "ap-sum"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-triangles",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Triangles",
      "slug": "triangles",
      "url": "/learn/grade-10/mathematics/triangles/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh106.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers correspondence, similarity criteria, BPT applications and indirect measurement. Complete deductive proofs of BPT and all similarity criteria, and every textbook problem, are still outside this companion.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "triangles-similarity",
        "triangles-bpt",
        "triangles-scale"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-coordinate-geometry",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Coordinate Geometry",
      "slug": "coordinate-geometry",
      "url": "/learn/grade-10/mathematics/coordinate-geometry/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh107.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers distance, internal section and midpoint applications. Coordinate proofs of every shape property and all textbook exercises remain to be added.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "coordinate-distance",
        "coordinate-section",
        "coordinate-midpoint"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-introduction-to-trigonometry",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Introduction to Trigonometry",
      "slug": "introduction-to-trigonometry",
      "url": "/learn/grade-10/mathematics/introduction-to-trigonometry/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh108.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers right-triangle ratios, standard acute-angle values and basic identities. It does not exhaust all identity proofs or textbook exercises.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "trig-ratios",
        "trig-angles",
        "trig-identities"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-some-applications-of-trigonometry",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Some Applications of Trigonometry",
      "slug": "some-applications-of-trigonometry",
      "url": "/learn/grade-10/mathematics/some-applications-of-trigonometry/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh109.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers level-ground height models, observation height, depression and a same-side two-position model. Other configurations and practical measurement uncertainty require additional lessons.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "heights-elevation",
        "heights-eye-level",
        "heights-two-positions"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-circles",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Circles",
      "slug": "circles",
      "url": "/learn/grade-10/mathematics/circles/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh110.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers the radius–tangent relation, equal tangent lengths with RHS reasoning, and a tangent-angle consequence. It provides a concise proof explanation, not every textbook proof or exercise configuration.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "circle-tangent",
        "circle-equal-tangents",
        "circle-angles"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-areas-related-to-circles",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Areas Related to Circles",
      "slug": "areas-related-to-circles",
      "url": "/learn/grade-10/mathematics/areas-related-to-circles/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh111.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers sectors, right-angle minor segments and selected composite areas. Other central-angle triangle calculations and all textbook exercise figures are not claimed complete.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "circle-sector-area",
        "circle-segment-area",
        "circle-composite-area"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-surface-areas-and-volumes",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Surface Areas and Volumes",
      "slug": "surface-areas-and-volumes",
      "url": "/learn/grade-10/mathematics/surface-areas-and-volumes/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh112.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers selected combinations of solids and exposed surfaces. The final remoulding lesson is labelled an extension; it is not a claim about the current prescribed exercise list. Hollow-object and every textbook configuration coverage remain pending.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "solid-exposed-area",
        "solid-volume",
        "solid-conservation"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-statistics",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Statistics",
      "slug": "statistics",
      "url": "/learn/grade-10/mathematics/statistics/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh113.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers direct-method grouped mean and standard equal-width grouped mode/median calculations. Assumed-mean and step-deviation methods, irregular-class cases and all textbook exercises remain outside this companion.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "statistics-mean",
        "statistics-mode",
        "statistics-median"
      ]
    },
    {
      "id": "cbse-2026-27-g10-maths-probability",
      "grade": 10,
      "subject": "Mathematics",
      "title": "Probability",
      "slug": "probability",
      "url": "/learn/grade-10/mathematics/probability/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/jemh114.pdf",
        "https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Maths_SecP1X_2026-27.pdf"
      ],
      "scope_note": "Original learning companion, not full textbook exercise solutions. Covers finite equally likely outcomes, complements and small organised sample spaces. The coin-spinner examples state independence explicitly. Biased experiments and all textbook exercise contexts are not covered.",
      "lessons": 3,
      "questions": 24,
      "visual_states": 12,
      "lesson_ids": [
        "probability-outcomes",
        "probability-complement",
        "probability-organised-counting"
      ]
    },
    {
      "id": "cbse-2026-27-g6-science-temperature-evidence-scales-tools",
      "grade": 6,
      "subject": "Science",
      "title": "Temperature and its Measurement — Evidence, Scales and Instruments (1 of 3)",
      "slug": "temperature-evidence-scales-tools",
      "url": "/learn/grade-6/science/temperature-evidence-scales-tools/",
      "source_urls": [
        "https://ncert.nic.in/textbook/pdf/fecu107.pdf"
      ],
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