Simple Machines: Forces in Action (Do It Yourself)

How did the Ancient Egyptians build the pyramids? What is an Archimedes screw? Which wedge do you use every time you eat? Do It Yourself offers an exciting new approach to understanding and investigation. Each book helps you conduct your own experiments and activities to learn more about the world around you.

Nonfiction

Paperback

Simple Machines: Forces in Action (Do It Yourself)