Pulleys

by Kay Manolis

Book Overview

Pulleys are simple machines used to lift and move loads. Builders use pulley systems to lift tools or materials. Elevators use pulleys to move up and down. Kids will learn how pulleys make work easier... This description may be from another edition of this product.

• Format: Library Binding
• Language: English
• ISBN: 1600143245
• ISBN13: 9781600143243
• Release Date: August 2009
• Publisher: Blastoff! Readers
• Length: 24 Pages
• Weight: 0.45 lbs.
• Dimensions: 0.3" x 6.7" x 9.1"
• Age Range: 7 to 10 years
• Grade Range: Grades 2 to 5