1. natural

2. Materials
There are different types of materials.
wood

3. Materials
There are different types of materials.
fabric

4. Materials
There are different types of materials.
glass

5. Materials
There are different types of materials.
rubber

6. Materials
There are different types of materials.
metal

7. Materials
There are different types of materials.
paper

8. Properties of materials
Materials can be hard, soft, rigid,
flexible, transparent or opaque.
opaque

9. Properties of materials
Materials can be hard, soft, rigid,
flexible, transparent or opaque.
transparent

10. Properties of materials
Materials can be hard, soft, rigid,
flexible, transparent or opaque.
flexible

11. Properties of materials
Materials can be hard, soft, rigid,
flexible, transparent or opaque.
hard

12. Properties of materials
Materials can be hard, soft, rigid,
flexible, transparent or opaque.
hard

13. Materials change
Materials change when we heat, cool,
stretch, bend or squash them.
heat

14. Materials change
Materials change when we heat, cool,
stretch, bend or squash them.
cool

15. Materials change
Materials change when we heat, cool,
stretch, bend or squash them.
stretch

16. Materials change
Materials change when we heat, cool,
stretch, bend or squash them.
bend

17. Materials change
Materials change when we heat, cool,
stretch, bend or squash them.
squash

18. Waterproof materials
Waterproof materials are water-resistant.
Water-resistant

19. Magnetism
Objects made from metal are magnetic.