Marbles, Roller Skates, Doorknobs
Simple Machines That Are Really WheelsBook - 1991
Explains how simple machines that are actually wheels work, including the pizza cutter, bicycle, and water faucet.
Publisher: Brookfield, CT : Millbrook Press, c1991.
Branch Call Number: J 621.811 LAM
Characteristics: 31 p. : col. ill. ; 24 cm.