Jennifer Shand
How Do Seesaws Go Up and Down? - A Book about Simple Machines
Summary
Have you ever wondered how seesaws go up and down or how screws stay secure in walls? Beginning concepts of mechanical engineering, including levers, wedges, inclined planes, and more, are explored in this newest engaging addition to the How Do series.
The How Do series is a great introduction to various STEM topics, each presented in a format that encourages audiences to ask questions and guess the answers before exploring the science behind them.
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Unabridged
15 minutes
From the publisher
Show publisher
Denise Hunter
L. M. Montgomery
Aesop
Molly O'Keefe
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