2145069
9781404810433
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 problem solving and make-and-do projects.Bailey, Gerry is the author of 'Long, Long, Ago ', published 2005 under ISBN 9781404810433 and ISBN 1404810439.
[read more]