🔬 Part 1: Material Properties Testing

1. Test each material for hardness by gently pressing with your fingernail or a coin. Record your observations:

Metal spoon: ________________________________

Rubber band: ________________________________

Wooden stick: ________________________________

Plastic container: ________________________________

Fabric swatch: ________________________________

2. Test each material for flexibility by gently bending. Can it bend without breaking?

Metal spoon:

Very flexible

Slightly flexible

Not flexible

Rubber band:

Very flexible

Slightly flexible

Not flexible

Wooden stick:

Very flexible

Slightly flexible

Not flexible

Plastic container:

Very flexible

Slightly flexible

Not flexible

Fabric swatch:

Very flexible

Slightly flexible

Not flexible

3. Based on your observations, classify the materials into groups. Write the material names in each category:

Hard materials: ________________________________

Soft materials: ________________________________

Flexible materials: ________________________________

Rigid materials: ________________________________

🎯 Part 2: Material Selection and Justification

4. You need to make a flexible container for storing food. Which material would be best?

Metal spoon

Rubber band

Wooden stick

Plastic container

Fabric swatch

Justify your choice with evidence from your testing:

5. You need to make a sturdy chair leg that won't bend under weight. Which material would be best?

Metal spoon

Rubber band

Wooden stick

Plastic container

Fabric swatch

Explain why hardness and rigidity are important for this use:

6. You need to make a waterproof cover that can bend and stretch. Which material properties are most important? (Select all that apply)

Hardness

Flexibility

Water resistance

Rigidity

Stretchability

🤔 Part 3: Critical Thinking and Reflection

7. What would happen if you used a very flexible material (like rubber) for a chair leg? Explain your reasoning:

8. Think of an everyday object at home. Name the object and explain how its material properties suit its function:

Object: ________________________________

Main material(s): ________________________________

How do the material properties make this object work well for its purpose?

9. What is the most important thing you learned about material properties today?

Material Properties Investigation

Material Properties Investigation

🔬 Part 1: Material Properties Testing

🎯 Part 2: Material Selection and Justification

🤔 Part 3: Critical Thinking and Reflection

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