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What materials do i need to buy a roller coaster for my roller coaster project in science?

April 26, 2017buy coaster Materials project roller

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What materials do i need to buy a roller coaster for my roller coaster project in science?

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My science class was assigned to do a roller coaster project. I don’t know what materials I should use. We have to have one loop, and a marble has to be able to go on it and complete the roller coaster.