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In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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In this activity, learners will construct an air cannon as a model for the human ear.

$1 - $5 per student Ages 11 - adult 10 to 30 minutes