This is a great story about a boy who's kite gets stuck in a tree. He attempts to get it out by throwing in other things to knock it down. Each time he tries something, it gets stuck and he has to throw something else in to knock the previous item out.
This is a great book to use for simple machines. There are many different examples of simple machines in this book. The students would be able to pick out the different simple machines they see and tell which one they are (the light switch is a lever). This book would be great to use to evaluate whether the students understand the different simple machines.