Screws (Blastoff! Readers Level 3 Seasons) by Kay Manolis
	List Price:   $21.95 Unit Price:   $17.56 You Save:   $4.39 (20%) ISBN-10:   1600143229 ISBN-13:   9781600143229 Publisher:   Bellwether Media; Blastoff! Readers Series:   Simple Machines Category:   Beginning Readers, Science Books Pub. Date:   January 2010 Pages:   24 Format:   Library Binding Ages:   5 to 10 Grades:   K to 3
Description/Notes
Screws are simple machines used for many different jobs. The concept of a screw is used in snow blowers, drills, and presses. Kids can learn how screws work, and how they are used in complex machines.