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In this activity, learners imitate the way vocal cords work by building a model from a plastic cup, rubber band, and a straw.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

1 cent - $1 per student Ages 6 - 18 5 to 10 minutes