You can play different kinds of this on a guitar or piano.
Music
This is on the classroom wall and the teacher writes on it.
Board
These are in books and often have numbers on them at the bottom.
Page
When you make a mistake with your pencil, you need this.
Rubber
We look at these to find roads and rivers and towns.
Maps
When you make a mistake with your pencil, you need this.
Rubber
