Put Pulleys to the Test - Walker, Sally M, and Feldman, Roseann

What do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But dont take our word for it. Put pulleys to the test with the fun experiments youll find in this book.

Put Pulleys to the Test 2011, Lerner Publications, Minneapolis, MN

ISBN-13: 9780761353225

Hardcover

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Put Pulleys to the Test 2011, Lerner Classroom, Minneapolis, MN

ISBN-13: 9780761378679

Trade paperback

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