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We used marbles, ping pong balls and steel ball bearings. The best place we found to buy marbles was Toys-R-Us. * We lost a lot of marbles. |
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Science Museum of Minnesota / Science Learning Network
©1997 Science Museum of Minnesota
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We used marbles, ping pong balls and steel ball bearings. The best place we found to buy marbles was Toys-R-Us. * We lost a lot of marbles. |
Back