Screws
Author(s): Sally M. Walker
We've all seen screws, but how do they work? Why is it easier to screw something into something than to simply push it in? With basic hands-on experiments and clear descriptions, this simple machine is explained.
General Information
- :
- : lerner
- : lerner
- : 0.136
- : 01 August 2002
- : United States
- : books
Other Specifications
- : Sally M. Walker
- : Paperback
- : 621.882
- : 48
- : colour illustrations
More About The Product
Sally M. Walker is the author of many books for young readers, including The 18 Penny Goose and Opossum at Sycamore Road. She is also a children's literature consultant and has taught children's literature at Northern Illinois University. Roseann Feldmann has been a classroom teacher, a college lecturer, curriculum author and administrator. Andy King has done editorial photography, including several works for Lerner's Fundamental Sports series, as well as a good deal of commercial photography.
