Way, Steve.
Simple machines : discover science through facts and fun / by Steve Way and Gerry Bailey. - North American ed. - Pleasantville, N.Y. : Gareth Stevens Pub., 2009. - 32 p. : col. ill. ; 27 cm. - Simply science. . - Simply science. .
Includes index.
Introduces such machines as levers, pulleys, wheels and ramps.
0836892313 (hc.) : $19.99 9780836892314
2008012425
Simple machines--Juvenile literature.
TJ147 / .W39 2009 TJ147 / .W39 2009
621.8
Simple machines : discover science through facts and fun / by Steve Way and Gerry Bailey. - North American ed. - Pleasantville, N.Y. : Gareth Stevens Pub., 2009. - 32 p. : col. ill. ; 27 cm. - Simply science. . - Simply science. .
Includes index.
Introduces such machines as levers, pulleys, wheels and ramps.
0836892313 (hc.) : $19.99 9780836892314
2008012425
Simple machines--Juvenile literature.
TJ147 / .W39 2009 TJ147 / .W39 2009
621.8