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

In this activity, learners build their own sound machines and explore the interplay of motion and sound.

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.