ScrewsPaperback - 2008
This series offers a clear introduction to simple machines--what they are, what they're made of, and how we use them in today's world. Exciting examples of each machine's applications draw on the world familiar to a child, including some that may be "hidden" in household objects or everyday fixtures.
Publisher: North Mankato, Minn. : Smart Apple Media, c2008.
Characteristics: 32 pages :,color illustrations ;,27 cm.