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How Do Seesaws Go Up and Down?: A Book About Simple Machines
Paperback
$9.99
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Have you ever wondered how seesaws go up and down or how screws stay secure in walls?
In the How Do series, readers are invited to guess and then explore the science behind the right answers. Beginning concepts of mechanical engineering, including levers, wedges, inclined planes, and more, are explored in this newest engaging addition to the How Do series
About the How Do series: These visually appealing STEM titles for inquisitive readers and young science enthusiasts, are fully illustrated ...