Simple machines help make difficult tasks easier for humans and they're all around us. The books in this series explain what simple machines are and explore the roles that simple machines have in our everyday lives. Each book provides a number of examples of each type of simple machine and where to find them. This series explores how forces and motion affect the tasks we have to complete and how simple machines work to make doing these tasks easier. Accessible language helps readers understand the complex subject matter. Features include: Fact boxes supplement the information presented in the main text. Full-color photographs show what each kind of simple machine looks like. STEM concepts presented in the text support the Next Generation Science Standards.