Forces & Simple Machines

by Jon Richards

Book Overview

Simple machines are used to overcome forces all the time. Even our arms are lifting machines that overcome the force of gravity. This exciting book teaches readers how to make simple machines and provides them with an excellent understanding of forces, friction, pulleys and gears.

• Format: Library Binding
• Language: English
• ISBN: 1404239081
• ISBN13: 9781404239081
• Release Date: July 2007
• Publisher: PowerKids Press
• Length: 32 Pages
• Weight: 0.75 lbs.
• Dimensions: 0.3" x 8.8" x 11.0"
• Age Range: 9 to 11 years
• Grade Range: Grades 4 to 6