This book is suitable for ages 7 to 8 years. Read all about wheels and axles and their many uses in this book. Children will be thrilled to learn of their many uses, from doorknobs to the insides of a clock. There are wheels that move, turn, steer, and serve as gears.

 

This book features in the following series: Get To Know Simple Machines, Simple Machines .

There are 32 pages in this book. This book was published 2009 by Crabtree Publishing Co, Canada .