Screws

by Lyn Sirota

Readers learn how this simple machine makes it easier to keep objects locked together. By the end of the book, readers know the difference between complex and simple machines and how screws are used... This description may be from another edition of this product.

• Format: Library Binding
• Language: English
• ISBN: 1614732760
• ISBN13: 9781614732761
• Release Date: August 2012
• Publisher: Child's World
• Length: 24 Pages
• Weight: 0.60 lbs.
• Dimensions: 0.3" x 9.5" x 8.1"
• Age Range: 5 to 8 years
• Grade Range: Preschool to Grade 3