Get to know screws /
Screws
by Paul Challen.
- New York : Crabtree Pub., c2009.
- 32 p. : ill. (chiefly col.) ; 29 cm.
- Get to know simple machines .
- Get to know simple machines. .
Includes bibliographical references (p. 32) and index.
What is a simple machine? -- Wrap it Up! -- Parts of a screw -- How a screw works -- Fastening and joining -- Fun with fastening! -- Raising and lowering -- Other uses of screws -- Screws and screwdrivers -- Working with screws -- Finding the pitch! -- Simple machines working together -- The history of screws -- Glossary.
Library Media Connection, November 2009 Resource Links, October 2009 Science and Children (N.S.T.A.), October 2009
Simple text, illustrations, and hands-on activities introduce children to simple machines, discussing screws and describing their various functions.