Levers in My WorldBook - 2006
This helpful volume explains what levers are and how to use them. Readers will learn to identify the different parts of a lever-fulcrum, load and effort. The book also explains the differences between first-, second- and third-class levers and explains why a seesaw is a first-class lever, but a fishing rod is a third-class lever.
Publisher: New York : PowerKids Press, 2006.
Edition: 1st ed.
Characteristics: 24 p. :,col. ill.,;19 cm.