Age
8-10
Grade
3-5
Angela Royston
Screws
Paperback
(Heinemann July 3, 2003)
Why is a spiral staircase easier to climb? How can a screw lift a heavy car? What is a propeller for? Screws have been sued for over 2,000 years as a simple machine that can make other machines work. When you turn a faucet on or off, ride on an airplane, or open a soda bottle you are using screws. This book explains what screws are and how they help you do everyday things.
- Series
- Machines in Action
- ISBN
- 1403440875 / 9781403440877
- Pages
- 32
- Weight
- 4.5 oz.
- Dimensions
- 7.5 x 0.2 in.
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