Unit 9

Materials

Materials and their properties

This is made of rubber.

This is made of plastic.

This is made of wood.

This is made of paper.

This is made of fabric.

This is made of glass.

This is made of metal.

This is stone.

This is a brick.

This is made of leather.

Click on the metal

Click on the paper

Click on the glass

Click on the plastic

Click on the wood

Click on the fabric

Click on the brick

Click on the rubber

Click on the stone

Click on the leather

The bottle is made of…

plastic

rubber

wood

The window is made of…

glass

rubber

wood

The wardrobe is made of…

wood

metal

plastic

The book is made of…

paper

metal

plastic

The scarf is made of…

fabric

metal

plastic

The spoon is made of…

fabric

metal

plastic

The wall is made of…

fabric

brick

plastic

The bag is made of…

fabric

leather

plastic

The duck is made of…

fabric

rubber

plastic

The wall is made of…

fabric

stone

plastic

Glass can be transparent.

Glass can be opaque.

Wool is soft

Rubber is bendy

Wood is rigid and hard

A brick is rigid and hard

Wood is rigid and hard

Rubber is…

bendy

rigid

hard

Wood is…

rigid

soft

bendy

Glass is…

transparent

soft

bendy

Brick is…

hard

soft

transparent

Wool is…

soft

hard

rigid

Magnetism

Some objects are atracted to magnets.

Metal objects are magnetic.

Is the spoon magnetic?

Yes, it is.

Is the pencil magnetic?

No, it isn’t

Is the sponge magnetic?

No, it isn’t

Is the clip magnetic?

Yes, it is

Is the bottle magnetic?

No, it isn’t

Is the screw magnetic?

Yes, it is

Properties of materials

The shape of materials can change

Bend

Twist

Stretch

Squash

Click on stretch

Click on bend

Click on squash

Click on twist

Is it bend or squash?

It’s squash.

Is it twist or bend?

It’s bend.

Is it stretch or bend?

It’s stretch.

Is it stretch or twist?

It’s twist.

Is it squash or twist?

It’s squash.

Natural and manufactured materials

Stone is naturalStone is made by nature

Wood is natural

Wood is made by nature

Leather is natural

Leather is made by nature

Wool is natural

Wool is made by nature

Plastic is manufactured

Plastic is made by people

Glass is manufactured

Glass is made by people

Cotton is manufactured

Cotton is made by people

Paper is manufactured

Paper is made by people

Is paper natural or manufactured?

Paper is manufactured.

Is wood natural or manufactured?

Wood is natural.

Is stone natural or manufactured?

Stone is natural.

Is plastic natural or manufactured?

Plastic is manufactured.

Is glass natural or manufactured?

Glass is manufactured.

Is cotton natural or manufactured?

Cotton is manufactured.

Changes of state

Chocolate becomes soft when heated

LiquidSolid

Ice becomes soft when heated

LiquidSolid

Butter becomes soft when heated

LiquidSolid

Water becomes hard when cooled

Liquid Solid

Juice becomes hard when cooled

Liquid Solid

Milk becomes hard when cooled

Liquid Solid