Put Levers to the Test (Searchlight Books ™ ― How Do Simple Machines Work?)
Released: Aug 01, 2011
Publisher: Lerner Publications ™
Format: Library Binding, 40 pages
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Description:
What do hammers, wheelbarrows, and brooms have in common? All of them are levers! Levers are simple machines. They help us to do jobs more easily. But dont take our word for it. Put levers to the test with the fun experiments youll find in this book.
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