Materials Around Us

Learning outcomes and evidence

1. Identify an object, its parts and the materials used to make those parts.

   Written response review:

   • 1 point: object and material terms distinguished
   • 1 point: each part matched to its material
   • 1 point: evidence or uncertainty reported

2. Group the same collection in more than one defensible way and connect properties to purpose.

   Written response review:

   • 1 point per consistent rule
   • 1 point: purpose-based explanation

3. Describe surface observations and use hardness or softness as relative properties.

   Written response review:

   • 1 point: both samples described
   • 1 point: comparative observation
   • 1 point: no unsupported claim about identity or strength

4. Classify actual samples as transparent, translucent or opaque using a fair viewing comparison.

   Written response review:

   • 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

5. Use observations to distinguish dissolving, suspended material and a separate liquid layer.

   Written response review:

   • 1 point: controls named
   • 1 point: dissolving distinguished from settling or layering
   • 1 point: no tasting or disappearance-of-matter claim

6. Read mass values, subtract a container mass and avoid judging mass from size alone.

   Written response review:

   • 1 point: container accounted for
   • 1 point: arithmetic and units correct
   • 1 point: comparison justified

7. Read a simple volume scale, distinguish contents from container capacity and convert litres to millilitres.

   Written response review:

   • 1 point: 600 mL contents
   • 1 point: 400 mL capacity remains
   • 1 point: wider shape can give a lower water height without changing volume

8. Explain matter using mass and occupied space, including materials that cannot easily be seen.

   Written response review:

   • 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

9. Combine several properties to choose a material, test a claim fairly and explain reuse choices.

   Written response review:

   • 1 point: criteria stated
   • 1 point: material choice supported by observations
   • 1 point: feedback produces an explained revision

Coverage limits

• 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.
• 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.

Written tasks and rubrics are available on the companion and print pages. They are reviewed by an adult, separately from browser quiz completion.