Describes the basic science principles and the history behind many inventions including the spearhead, the wheel, the earth ramp, the plow, a shadoof, the raft, a bridge, and paint. Includes hands-on... This description may be from another edition of this product.
Format:Hardcover
Language:English
ISBN:1904668682
ISBN13:9781904668688
Release Date:April 2005
Publisher:Mercury Books
Length:48 Pages
Weight:1.15 lbs.
Dimensions:0.4" x 8.6" x 11.3"
Age Range:4 to 8 years
Grade Range:Preschool to Grade 3
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