{
  "source_book_id": "fecu1",
  "source_chapter_id": "fecu1-06",
  "source_title": "Materials Around Us",
  "source_url": "https://ncert.nic.in/textbook/pdf/fecu106.pdf",
  "source_edition": "Reprint 2026–27",
  "source_printed_pages": [
    101,
    122
  ],
  "scope": "Nine original lessons covering the identified core learning outcomes across three companions. Source exercise concepts are mapped, not copied or supplied as verbatim textbook solutions.",
  "core_outcomes": [
    {
      "id": "fecu1-06-outcome-01",
      "title": "Identify an object, its parts and the materials used to make those parts.",
      "source_sections": [
        "6.1",
        "6.2"
      ],
      "taught_in": [
        "g6-materials-objects"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-objects-q1",
        "g6-materials-objects-q2",
        "g6-materials-objects-q3",
        "g6-materials-objects-explain"
      ],
      "diagnosed_by": [
        "g6-materials-objects-q4"
      ],
      "assessed_by": [
        "g6-materials-objects-q5",
        "g6-materials-objects-q6",
        "g6-materials-objects-q7",
        "g6-materials-objects-q8"
      ],
      "open_response_rubric": [
        "1 point: object and material terms distinguished",
        "1 point: each part matched to its material",
        "1 point: evidence or uncertainty reported"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-02",
      "title": "Group the same collection in more than one defensible way and connect properties to purpose.",
      "source_sections": [
        "6.2"
      ],
      "taught_in": [
        "g6-materials-classify"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-classify-q1",
        "g6-materials-classify-q2",
        "g6-materials-classify-q3",
        "g6-materials-classify-explain"
      ],
      "diagnosed_by": [
        "g6-materials-classify-q4"
      ],
      "assessed_by": [
        "g6-materials-classify-q5",
        "g6-materials-classify-q6",
        "g6-materials-classify-q7",
        "g6-materials-classify-q8"
      ],
      "open_response_rubric": [
        "1 point per consistent rule",
        "1 point: purpose-based explanation"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-03",
      "title": "Describe surface observations and use hardness or softness as relative properties.",
      "source_sections": [
        "6.3.1",
        "6.3.2"
      ],
      "taught_in": [
        "g6-materials-surface"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-surface-q1",
        "g6-materials-surface-q2",
        "g6-materials-surface-q3",
        "g6-materials-surface-explain"
      ],
      "diagnosed_by": [
        "g6-materials-surface-q4"
      ],
      "assessed_by": [
        "g6-materials-surface-q5",
        "g6-materials-surface-q6",
        "g6-materials-surface-q7",
        "g6-materials-surface-q8"
      ],
      "open_response_rubric": [
        "1 point: both samples described",
        "1 point: comparative observation",
        "1 point: no unsupported claim about identity or strength"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-04",
      "title": "Classify actual samples as transparent, translucent or opaque using a fair viewing comparison.",
      "source_sections": [
        "6.3.3"
      ],
      "taught_in": [
        "g6-materials-light"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-light-q1",
        "g6-materials-light-q2",
        "g6-materials-light-q3",
        "g6-materials-light-explain"
      ],
      "diagnosed_by": [
        "g6-materials-light-q4"
      ],
      "assessed_by": [
        "g6-materials-light-q5",
        "g6-materials-light-q6",
        "g6-materials-light-q7",
        "g6-materials-light-q8"
      ],
      "open_response_rubric": [
        "1 point: consistent setup",
        "1 point: transparent clear view, translucent transmitted light without clear view, and opaque blocking of light distinguished",
        "1 point: conclusion limited to actual samples"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-05",
      "title": "Use observations to distinguish dissolving, suspended material and a separate liquid layer.",
      "source_sections": [
        "6.3.4"
      ],
      "taught_in": [
        "g6-materials-water"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-water-q1",
        "g6-materials-water-q2",
        "g6-materials-water-q3",
        "g6-materials-water-explain"
      ],
      "diagnosed_by": [
        "g6-materials-water-q4"
      ],
      "assessed_by": [
        "g6-materials-water-q5",
        "g6-materials-water-q6",
        "g6-materials-water-q7",
        "g6-materials-water-q8"
      ],
      "open_response_rubric": [
        "1 point: controls named",
        "1 point: dissolving distinguished from settling or layering",
        "1 point: no tasting or disappearance-of-matter claim"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-06",
      "title": "Read mass values, subtract a container mass and avoid judging mass from size alone.",
      "source_sections": [
        "6.3.5",
        "6.4"
      ],
      "taught_in": [
        "g6-materials-mass"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-mass-q1",
        "g6-materials-mass-q2",
        "g6-materials-mass-q3",
        "g6-materials-mass-explain"
      ],
      "diagnosed_by": [
        "g6-materials-mass-q4"
      ],
      "assessed_by": [
        "g6-materials-mass-q5",
        "g6-materials-mass-q6",
        "g6-materials-mass-q7",
        "g6-materials-mass-q8"
      ],
      "open_response_rubric": [
        "1 point: container accounted for",
        "1 point: arithmetic and units correct",
        "1 point: comparison justified"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-07",
      "title": "Read a simple volume scale, distinguish contents from container capacity and convert litres to millilitres.",
      "source_sections": [
        "6.3.6",
        "6.4"
      ],
      "taught_in": [
        "g6-materials-volume"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-volume-q1",
        "g6-materials-volume-q2",
        "g6-materials-volume-q3",
        "g6-materials-volume-explain"
      ],
      "diagnosed_by": [
        "g6-materials-volume-q4"
      ],
      "assessed_by": [
        "g6-materials-volume-q5",
        "g6-materials-volume-q6",
        "g6-materials-volume-q7",
        "g6-materials-volume-q8"
      ],
      "open_response_rubric": [
        "1 point: 600 mL contents",
        "1 point: 400 mL capacity remains",
        "1 point: wider shape can give a lower water height without changing volume"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-08",
      "title": "Explain matter using mass and occupied space, including materials that cannot easily be seen.",
      "source_sections": [
        "6.4"
      ],
      "taught_in": [
        "g6-materials-matter"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-matter-q1",
        "g6-materials-matter-q2",
        "g6-materials-matter-q3",
        "g6-materials-matter-explain"
      ],
      "diagnosed_by": [
        "g6-materials-matter-q4"
      ],
      "assessed_by": [
        "g6-materials-matter-q5",
        "g6-materials-matter-q6",
        "g6-materials-matter-q7",
        "g6-materials-matter-q8"
      ],
      "open_response_rubric": [
        "1 point: 0.5 g increase",
        "1 point: air is matter for both stated reasons",
        "1 point: no literal dot count or home pressure test"
      ],
      "status": "authored_self_checked_pending_independent_review"
    },
    {
      "id": "fecu1-06-outcome-09",
      "title": "Combine several properties to choose a material, test a claim fairly and explain reuse choices.",
      "source_sections": [
        "6.2",
        "6.3",
        "Further learning"
      ],
      "taught_in": [
        "g6-materials-design"
      ],
      "visual_frames": 4,
      "practised_by": [
        "g6-materials-design-q1",
        "g6-materials-design-q2",
        "g6-materials-design-q3",
        "g6-materials-design-explain"
      ],
      "diagnosed_by": [
        "g6-materials-design-q4"
      ],
      "assessed_by": [
        "g6-materials-design-q5",
        "g6-materials-design-q6",
        "g6-materials-design-q7",
        "g6-materials-design-q8"
      ],
      "open_response_rubric": [
        "1 point: criteria stated",
        "1 point: material choice supported by observations",
        "1 point: feedback produces an explained revision"
      ],
      "status": "authored_self_checked_pending_independent_review"
    }
  ],
  "companions": [
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-objects-properties",
      "lesson_ids": [
        "g6-materials-objects",
        "g6-materials-classify",
        "g6-materials-surface"
      ]
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-testing-materials",
      "lesson_ids": [
        "g6-materials-light",
        "g6-materials-water",
        "g6-materials-mass"
      ]
    },
    {
      "id": "cbse-2026-27-g6-science-materials-around-us-matter-design",
      "lesson_ids": [
        "g6-materials-volume",
        "g6-materials-matter",
        "g6-materials-design"
      ]
    }
  ],
  "source_activity_alignment": [
    {
      "source_activity": "6.1",
      "lesson_ids": [
        "g6-materials-objects"
      ],
      "approach": "Original part-and-material record"
    },
    {
      "source_activity": "6.2",
      "lesson_ids": [
        "g6-materials-classify"
      ],
      "approach": "Regroup the same collection by explicit criteria"
    },
    {
      "source_activity": "6.3",
      "lesson_ids": [
        "g6-materials-design"
      ],
      "approach": "Original multi-criterion selection task"
    },
    {
      "source_activity": "6.4",
      "lesson_ids": [
        "g6-materials-design"
      ],
      "approach": "Supplied bounce-comparison design and fair-test questions; no claim that the original source experiment is reproduced"
    },
    {
      "source_activity": "6.5",
      "lesson_ids": [
        "g6-materials-surface"
      ],
      "approach": "Safe relative softness comparison"
    },
    {
      "source_activity": "6.6",
      "lesson_ids": [
        "g6-materials-light"
      ],
      "approach": "Original viewing comparison with sample and thickness limits"
    },
    {
      "source_activity": "6.7",
      "lesson_ids": [
        "g6-materials-water"
      ],
      "approach": "Prediction-observation-conclusion records for known materials"
    },
    {
      "source_activity": "6.8",
      "lesson_ids": [
        "g6-materials-mass"
      ],
      "approach": "Original equal-volume/different-mass evidence and holder subtraction"
    }
  ],
  "source_exercise_concept_alignment": [
    {
      "source_item": "1",
      "lesson_ids": [
        "g6-materials-classify"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "2",
      "lesson_ids": [
        "g6-materials-objects",
        "g6-materials-surface",
        "g6-materials-light",
        "g6-materials-water",
        "g6-materials-matter"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "3",
      "lesson_ids": [
        "g6-materials-light",
        "g6-materials-design"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "4",
      "lesson_ids": [
        "g6-materials-objects",
        "g6-materials-surface",
        "g6-materials-water",
        "g6-materials-matter",
        "g6-materials-light"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "5",
      "lesson_ids": [
        "g6-materials-design",
        "g6-materials-surface"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "6",
      "lesson_ids": [
        "g6-materials-design",
        "g6-materials-classify"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "7",
      "lesson_ids": [
        "g6-materials-light",
        "g6-materials-matter"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "8",
      "lesson_ids": [
        "g6-materials-surface",
        "g6-materials-water"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "9",
      "lesson_ids": [
        "g6-materials-objects",
        "g6-materials-surface",
        "g6-materials-light",
        "g6-materials-water",
        "g6-materials-matter"
      ],
      "status": "Original related practice; no source solution claim"
    },
    {
      "source_item": "10",
      "lesson_ids": [
        "g6-materials-water"
      ],
      "status": "Original related practice; no source solution claim"
    }
  ],
  "further_learning_alignment": [
    {
      "source_item": 1,
      "lesson_ids": [
        "g6-materials-design"
      ],
      "status": "Local recycling research prompted; no external visit or complete material dossier supplied"
    },
    {
      "source_item": 2,
      "lesson_ids": [
        "g6-materials-design"
      ],
      "status": "Local collection rules and material evidence prompted; recycler visit not reproduced"
    },
    {
      "source_item": 3,
      "lesson_ids": [
        "g6-materials-classify"
      ],
      "status": "Original six-object sorting task; not the original 20–30-object activity"
    },
    {
      "source_item": 4,
      "lesson_ids": [
        "g6-materials-design"
      ],
      "status": "Original reuse design, drawing and feedback task"
    }
  ],
  "uncovered_or_limited": [
    "Context boxes on historical pottery and traditional property classifications have not been adapted.",
    "The medical oral-rehydration example is not reproduced; this course contains no recipe or treatment instructions.",
    "Textbook word games and exact riddles are not reproduced. Related terminology and property reasoning are covered by original questions.",
    "No claim of every source exercise, sentence, cultural context box or classroom experiment being covered.",
    "Open-response tasks and rubrics are authored metadata; public engine support must be verified during integration.",
    "No human teacher or native-language editor sign-off. This file is authored mapping, not a certification of mastery.",
    "The thermal-feel material selection aspect of source exercise 5 (a chair feeling cold) is not taught in this batch; its other property-selection concepts have related original practice."
  ],
  "completeness": {
    "identified_core_outcomes_authored": 9,
    "identified_core_outcomes_total": 9,
    "all_textbook_exercise_solutions": false,
    "all_source_enrichment_boxes": false,
    "full_chapter_release_claim": false
  },
  "integration": {
    "open_tasks_and_rubrics_rendered": true,
    "mastery_requires_adult_evidence": true,
    "human_teacher_review_complete": false
  }
}