Wheels and Axles

Children's Literature - Amie Rose Rotruck

The wheel is probably one of the most basic yet important inventions ever created. In this book from the "Simple Machines" series, Sarah Tieck examines the operation and contribution of the wheel and axle. After putting the devices in the context of other simple machines, such as inclined planes and pulleys, Tieck describes in clear, concise terms the parts of a wheel and axle, as well as how the application of force makes the machine operate. By using examples that most children would understand, such as a bucket in a well, wagons, and tricycles, Tieck shows the contributions that wheels and axles make to society. She then describes the history of the wheel, including the log as the likely first version of this machine. A glossary and numerous photos help make this book a very complete and easy-to-understand guide to wheels and axles.