Simple machines /
THOMPSON Gare
Simple machines / Gare Thompson - National Geographic, 2002 - 24 p. - National Geographic .
Describes the work of six simple machines: pulley, lever, screw, wedge, inclined plane, wheel and axle.
9781740655927 (pbk) : 8.00 BND
MACHINERY-EXPERIMENTS-JUVENILE LITERATURE
Simple machines / Gare Thompson - National Geographic, 2002 - 24 p. - National Geographic .
Describes the work of six simple machines: pulley, lever, screw, wedge, inclined plane, wheel and axle.
9781740655927 (pbk) : 8.00 BND
MACHINERY-EXPERIMENTS-JUVENILE LITERATURE