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In this activity, learners investigate the sense of hearing and plan and conduct their own experiments.

In this activity, learners explore sound by constructing an instrument toy that buzzes when you swing it.

In this activity, learners simulate whale echolocation. Learners experience echolocation by wearing blindfolds, while another learner makes snapping noises in front of, behind, or to the side of them.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

In this lab, learners experience how dolphins and other echolocating animals use their senses to locate and identify objects without using their sense of sight.

In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.