Simple machines / by D.J. Ward ; illustrated by Mike Lowery.
- ISBN: 9780062430908
- ISBN: 0062430904
- Physical Description: 1 online resource (37 pages) : color illustrations.
- Edition: First edition.
- Publisher: New York, NY : Harper, an imprint of HarperCollins Publishers, 
|Summary, etc.:|| "Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out!"Amazon website.
|Target Audience Note:|| 4-8.
K to 3.
|Source of Description Note:|| Print version record.
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