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    COSI
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    This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave. This is an excellent activity to use to lead into discussion of waves of all sorts ...

    $1 - $5 per student Ages 4 - 14 10 to 30 minutes
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    In this activity, learners use a tuning fork to explore how the Doppler effect works. They strike the tuning fork to produce a sound, then observe as the tone changes as the fork is swung back and...

    $5 - $10 per group Ages 11 - 18 5 to 10 minutes