Simple machines / by D.J. Ward ; illustrated by Mike Lowery.

"Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more...

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Bibliographic Details
Main Author: Ward, D. J. 1966-
Other Authors: Lowery, Mike, 1980- (Illustrator)
Format: Book
Language:English
Published: New York, NY : Harper, an imprint of HarperCollins Publishers, [2015]
Edition:First edition.
Series:Let's-read-and-find-out science.
Subjects:

Walker Library - Curriculum Collection - Juvenile - 3rd Floor

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Call Number: 621.8 WAR
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