Explains what simple machines are and what they do; describes the scientific method; and includes experiments testing different simple machine concepts.
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Explains what simple machines are and what they do; describes the scientific method; and includes experiments testing different simple machine concepts.
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Add this copy of Step-By-Step Experiments With Simple Machines to cart. $49.47, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2012 by Childs World Inc.
