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Levers (Simple Science)
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Amazon.com Product Description (ISBN 0750234156, Paperback)With its winning combination of child-friendly, easy-to-read text, humorous illustrations and simple experiments, "Simple Science: Levers" makes learning about a basic technology concept fun.
(retrieved from Amazon Thu, 12 Mar 2015 18:19:21 -0400)
Introduces the concept of this simple machine and suggests activities which explore the principle of force.
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