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Persistence of Vision

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If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?
1 cent - $1 per student Ages 6 - 14 Under 5 minutes

Pipes of Pan

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Create an instrument that you don't play--you just listen to it through tubes of various lengths.
1 cent - $1 per student Ages 4 - 14 5 to 10 minutes