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    NOAA
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    In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities. Learners demonstrate wave motion in...

    $1 - $5 per group Ages 11 - 14 1 to 4 weeks
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    New York Hall of Science
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    Investigate the interaction of liquids of different densities and experiment with wave patterns with this hands-on activity. Using water, food coloring and oil, learners will explore the concepts...

    $1 - $5 per group Ages 6 - 11 5 to 10 minutes
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    Colorado State University
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    In this activity, learners examine raindrop bottles (prepared ahead of time) to observe in slow motion the behavior of falling droplets and explore concepts such as drag and terminal velocity. As...

    1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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    American Chemical Society
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    In this activity on page 4 of the PDF, learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water. Learners compare how...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes