Introduces inclined planes, including how they function and how they are used in everyday objects to make life easier.

In this series, you'll explore six simple machines. Each book describes a different one and explains how it helps make our work easier. Experiments and activities give you the chance to work with each simple machine. You'll be surprised at how many you've been using all along! - Back cover.

Introduces screws, including how they function and how they are used in everyday objects to make life easier.