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Make a Color-Changing Marble
Paper Roller Coasters :)
Work, Power, and the Conservation of Energy through Roller Coasters
Marble Machine Tutorial
Yet Another Pinball Machine
Test Tube Stirling Engine
Arduino controlled Marble Maze
How to Play Marbles
Kinetic Marble Track Around The Top Of A Room
LED Fiber Optic Chandelier
Posted:Jan 31, 2009
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