Sensational Science Projects With Simple Machines
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| Google books | books.google.com |
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| Originally published | 2006 |
| Authors | Robert Gardner |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2150170 |
About Sensational Science Projects With Simple Machines
How can a 50-pound boy lift a 200-pound man? How does a wheelbarrow work? Is it easier to roll a toy truck up an inclined plane or just pick it straight up? What is an easy way to move a load of bricks? . . .