You will learn
- Match properties to uses.
- Compare materials with tests.
- Explain a choice.
- Think about reuse and the environment.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- The best material fits the job.
- Tests give evidence.
- Cost and the environment matter.
- We can reuse and recycle.
Words to know
to choose carefully
lasting a long time
able to continue without harming nature
to turn used things into new things
1. Discover: The umbrella choice
Abena helps design an umbrella. Paper is cheap but soggy. Cotton soaks up water. Plastic fabric keeps water out and folds easily. “I choose waterproof plastic fabric,” she says. “But I will recycle it when it wears out.”
Think: How did she decide?
2. Understand: Selection
Idea 1: Match to need
First list what the object needs to do. Then select a material whose properties fit: waterproof for an umbrella, durable for a toy, transparent for a window.
Idea 2: Test and compare
Run fair tests on candidate materials, record results and use the evidence to choose.
Idea 3: Think ahead
Choose sustainable materials when possible. Reuse and recycle to reduce waste.
3. Worked examples
Example 1 (I show you): Need
Umbrella.
- Waterproof.
- Light.
- Plastic fabric.
Answer: Waterproof plastic fabric suits an umbrella.
Example 2 (We do it together): Need
Window.
- Transparent.
- Strong.
- Glass.
Answer: Glass suits a window.
Example 3 (You try): Think
After use.
Show the steps and answer
- Recycle.
- Reuse.
- Less waste.
Answer: Recycle when possible.
Did you know?
Bamboo grows very quickly and is a sustainable material used for building and furniture.
Why this matters
Good material choices make useful, safe and long-lasting things.
4. Explore: Best bag
Choose and test a material for a carrier bag.
- List needs: strong, light, reusable.
- Test paper, plastic, cloth.
- Record strength with equal loads.
- Choose and explain.
Think about it: what did you notice?
What did you notice? Cloth was strongest and reusable.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- We ___ materials by their properties.
- ___ lasts a long time.
- ___ is better for nature.
- We ___ used things.
Guided practice
Question 1. How do we select a material?
Match properties.
Question 2. What is durable?
Lasting.
Question 3. What is sustainable?
Does not harm nature.
Independent practice
Level 1: Start
- How do we select a material?
- What is durable?
- What is sustainable?
- What is recycling?
- Why test?
Level 2: Grow
- Why consider cost?
- Why recycle?
- Why durable toys?
Level 3: Stretch
- Test bag materials.
- Choose a material and justify.
- Plan to reuse.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
What material is your cup made of?
Show a sample answer
Plastic.
Another one. Tell a family member one thing from this lesson. Use the words you learned.
Show a sample answer
A clear sentence that uses at least one word from Words to know.
7. Common mistakes
Fix: It depends on needs.
Fix: It depends on use and disposal.
8. Lesson summary and revision card
- I can match properties to uses.
- I can compare materials with tests.
- I can explain a choice.
- I can think about reuse and the environment.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- The best material fits the job.
- Tests give evidence.
- Cost and the environment matter.
- We can reuse and recycle.
11. Next lesson
Next lesson: Forces. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- How do we select a material? [3 marks]
- Choose a bag material. [3 marks]
- What is recycling? [2 marks]
- Name a sustainable material. [1 mark]
- Safety rule? [1 mark]
Total: 10 marks.
Marking guide and model answers
- List needs [1]; match properties [1]; test [1]
- Material [1]; property [1]; reason [1]
- Turn used [1]; into new [1]
- Bamboo [1]
- Any [1]
Score guide: 9 to 10 = secure. 6 to 8 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- How do we select a material?
- What is durable?
- What is sustainable?
- What is recycling?
- Why test?
- Why consider cost?
- Why recycle?
- Why durable toys?
- Test bag materials.
- Choose a material and justify.
Homework
Choose a material for a lunch box and explain your choice.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. How do we select a material? | Match properties. | 1 |
| 2. What is durable? | Lasting. | 1 |
| 3. What is sustainable? | Does not harm nature. | 1 |
| 4. What is recycling? | Making new from old. | 1 |
| 5. Why test? | Evidence. | 1 |
| 6. Why consider cost? | Affordable. | 1 |
| 7. Why recycle? | Less waste. | 1 |
| 8. Why durable toys? | Last longer. | 1 |
| 9. Test bag materials. | Table. | 1 |
| 10. Choose a material and justify. | Paragraph. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Match properties.; 2 Lasting.; 3 Does not harm nature.; 4 Making new from old.; 5 Evidence.. Level 2: 1 Affordable.; 2 Less waste.; 3 Last longer.. Level 3: 1 Table.; 2 Paragraph.; 3 Plan..
Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 Match properties to uses | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Compare materials with tests | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Explain a choice | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Think about reuse and the environment | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: “The cheapest is always best.” It depends on needs.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Choose materials with evidence.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child chooses materials for a job. You do not need to be an expert to help.
- Look at objects at home.
- Ask, “Why this material?”
- Recycle together.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: match properties to uses; compare materials with tests; explain a choice; think about reuse and the environment.
Prerequisite knowledge. Grade 2 matter ideas: solids and liquids, air and water, and the properties of everyday materials.
Materials. Cloth, paper, plastic, sand, small bags. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.
Preparation. Prepare test bags.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Show three bags and ask, “Which is best?”
Explanation (10 min). Teach selection.
Guided activity (10 min). Learners test.
Independent activity (10 min). Learners justify.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Which material and why?
Teacher explanation notes. Start with real objects and safe, hands-on observation. Then talk about what was seen, then draw and write. Always say “how do you know?”. Keep to the safety notes, and use local, safe materials.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use real objects and pictures, short sentences and a partner. Let learners point, show or draw instead of writing. Extension. Ask learners to find a new example at home and explain how they know.
Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.
Misconceptions. “The cheapest is always best.” It depends on needs.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 10-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Choose materials with evidence. Enrichment. Look for one new example near your home or school, draw it and explain it to someone. Homework. See above.
Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Next Generation Science Standards, Cambridge Primary Science and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Research used to shape this lesson. Courseversity Science curriculum, Grade 3 Unit 5, topic 10; Next Generation Science Standards, structure and properties of matter; Cambridge Primary Science Stage 3, materials; IB Primary Years Programme, how the world works. These sources informed the lesson.