simple machines

Text and illustrations describe levers, a simple machine.

Text and illustrations describe the simple machines of wheels and axles.

Text and illustrations describe pulleys, a simple machine.

Text and illustrations describe screws, a simple machine.

Simple text and photographs introduce simple machines and give examples of their everyday use.

Photographs and simple text describe how wheels and axles work in simple machines.

This book describes different jobs that levers and pulleys can do and how they are able to do them. An activity based on real world situations challenges readers to apply what they've learned in order to solve a puzzle.

This book uses simple experiments to explore wheels, pulleys, levers, friction, and lift in terms of inventions and discoveries underlying the modern mechanical world.

Presents an introduction to springs, in simple text with illustrations, describing how these simple machines work in everyday life.

Presents an introduction to screws, in simple text with illustrations, describing how these simple machines work in everyday life.