pulleys

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.

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

Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.

Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.

Introduces pulleys and how they work to raise flags, as well as heavy objects.

Introduces young readers to pulleys, explaining what they are, how they work, what they have been used for throughout history, and how they might be used in the future.

Explains scientific concepts related to pulleys, covering such topics as the fixed pulleys and counterweights, and presents hands-on activities.

Explains the workings of simple machines, including levers, wheels and axles, pulleys and cranes, and gears, and features related experiments.

Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.

An exploration of pulleys that defines what they are; discusses their parts, how they work, their history, and how they are used; and includes a related experiment.