Year 1 Ch 6: Materials Around Us (Part 2)

Year 1 Ch 6: Materials Around Us (Part 2)

by Fadhilah Ismail;

​Lesson Objectives

Students should be able to:

• ​Know some other materials properties

• ​Classify materials according to properties

• ​Determine suitable material to make objects

Material properties that we have learnt

• ​Strong vs Weak

• ​Soft vs Hard

• ​Float on water vs Sink in water

• ​Absorbent vs Waterproof

​

​What other properties of materials do you know?

​Properties of materials: Transparent vs Opaque

• ​Transparent materials are materials that we can see through

• ​Transparent object does not make shadow

• We cannot see through opaque objects.

• ​Opaque material make dark shadows

Multiple Choice

Which material is transparent?

Multiple Choice

The wall of our house is

• Opaque

• Transparent

​Material properties: Electric conductor vs insulator

​Electric conductor lets electric passes through it

​All metals are electric conductor.

Insulators do not let electric passes through them.

​Some insulators are plastic and rubber

​

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​Electric wires are covered in plastic or rubber to make it safe

Multiple Choice

Which of the following conducts electricity?

Multiple Choice

Electric wires are covered by plastics to make it

• Strong

• Weak

• Safe

• Hard

​Materials properties: Rough vs smooth

• Materials that are rough have uneven surface

• ​Some objects need to be rough like car tyres, shoe sole

• Smooth materials have even surface.

• ​Some object need to be smooth like mirrors

Multiple Choice

This object is

• Rough

• Smooth

Multiple Choice

This object's surface is

• Rough

• Smooth

Important properties of materials

​Now, can you tell the important properties of some objects and materials?

​Let's see...

Multiple Choice

What is the important property of this object?

• Soft

• Strong

• Weak

• Conduct electricity

Multiple Choice

What is the important property of this object?

• Soft

• Strong

• Waterproof

• Hard

Multiple Choice

What is the important property of this object?

• Soft

• Strong

• Waterproof

• Absorbent

Multiple Choice

What is the important property of this object?

• Hard

• Strong

• Waterproof

• Absorbent

Multiple Choice

What is the important property of this object?

• Opaque

• Transparent

• Waterproof

• Absorbent

Multiple Choice

What is the important property of this object?

• Conduct electricity

• Transparent

• Float on water

• Absorbent

Multiple Choice

What is the important property of this object?

• Sink in water

• Transparent

• Float on water

• Absorbent