This document compares the properties of four materials: glass, wood, wool, and bricks. Glass is transparent and hard/rigid, while wood, wool, and bricks are all opaque but have different textures - wood and bricks are hard/rigid, while wool is soft and bendy.

1. Properties
of materials

2. Glass

3. Glass is transparent.
We can see what is behind it.

4. Glass is hard and rigid.

5. Wood

6. Wood is not transparent.
You cannot see what is behind
it.
Wood is opaque.

7. Wood is hard and rigid.

8. Wool

9. Wool is not transparent.
You cannot see what is behind
it.
Wool is opaque.

10. Wool is soft and bendy.

11. Bricks

12. Bricks are not transparent.
You cannot see what is behind
them.
Bricks are opaque.

13. Bricks are hard and rigid.