Age
7-9
Grade
2-3
David Glover
Levers
Library Binding
(Heinemann May 8, 2006)
How are wheelbarrows, can openers, and bicycle brakes alike? Why is it easier to hold a bolt tight with a pair of pliers than with your bare hands? Why is it easier to eat a carrot with back teeth than with your front? Why is a seesaw considered a machine? This book shows you how different kinds of these simple machines are all around you to make your work and play easier.
- Series
- Simple Machines
- ISBN
- 1403485631 / 9781403485632
- Pages
- 24
- Weight
- 4.8 oz.
- Dimensions
- 8.2 x 0.5 in.
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