Every time you turn on a faucet, ride a bike, or open a door, you're using a simple machine called a wheel and axle. This book uses clear text and practical, every-day examples to explain the physics behind the wheel and axle. Easy-to-read diagrams and large, vivid photographs aid understanding, and experiments encourage students to learn first-hand how this helpful simple machine works.
Chris Oxlade is the best-selling author of more than 150 non-fiction books, most of them explaining complex scientific ideas and modern technology to young readers in readable text.