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    Lunar and Planetary Institute
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    In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods. Learners dunk the "planets" in water to...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    Colorado State University
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    In this kinesthetic activity that demonstrates pressure, learners act as air molecules in a "container" as defined by a rope. Learners explore how air molecules move in different...

    free Ages 8 - 14 10 to 30 minutes

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