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    The Exploratorium
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    In this activity, PVC pipe, plastic water bottles and vinyl tubing are used to make a simple working toilet model. The model shows the role of a siphon in the flushing of a toilet. Educators can...

    $10 - $20 per group Ages 8 - 18
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    Science Museum of Minnesota
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    In this activity, learners will investigate the sounds of the heart. Learners construct two stethoscopes, one out of paper and another made from vinyl tubing and a plastic bottle, and investigate...

    $1 - $5 per group Ages 6 - 14 30 to 45 minutes