Ramps and Wedges

By Angela Royston

Book Overview

Why do skiers use a zigzag path down steep slopes? How does a zipper work? How does a lock work? Ramp and wedges are simple machines that can be used to make other machines work. When you open a lock,... This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 1575723212
• ISBN13: 9781575723211
• Release Date: October 2000
• Publisher: Heinemann Educational Books
• Length: 32 Pages
• Weight: 0.73 lbs.
• Dimensions: 0.4" x 7.8" x 10.6"
• Age Range: 8 to 10 years
• Grade Range: Grades 3 to 5