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    Lawrence Hall of Science
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    In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach. This activity should be done...

    Over $20 per group Ages 8 - adult 1 to 2 hours
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    Twin Cities Public Television
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    This activity (on page 3 of the PDF under GPS: Roller Coaster Design Activity) is a full inquiry investigation into g-force and acceleration. Groups of learners will construct their own...

    $5 - $10 per student Ages 8 - 14 1 to 7 days