Answer:
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. What am I?
I turn everything around, but I cannot move. When you see me, you see you! What am I?
When it comes to me you go on red and stop on green.
I am full of holes but still hold water. What am I?
found at the back of the book.
I am rarely touched but often held. If you are smart you'll use me well. What am I?