| Simple Machine Invention: Pupulator’s Assistant |
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Our invention can cut grass and fly. It is as big as a car. It has wheels and gears. It costs one buck. Every kid should buy one. |
| LINKS> | http://sln.fi.edu/qa97/spotlight3/spotlight3.html
http://www.coe.uh.edu/archive/science/science_lessons/scienceles1/wheel.htm |