Publisher's Synopsis
Describes the simple machines--lever, pulley, wedge, screw, inclined plane, and wheel and axle--and explains how they are utilized to make work easier.
Hardback
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Describes the simple machines--lever, pulley, wedge, screw, inclined plane, and wheel and axle--and explains how they are utilized to make work easier.
ISBN: | 9780688416850 |
Publisher: | Lothrop Lee & Shepard |
Imprint: | Lothrop Lee & Shepard |
Language: | English |
Number of pages: | 64 |
Weight: | -1g |