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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.

This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

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.

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 activity, learners create a straw oboe to explore sound and pitch.

In this activity, learners turn an ordinary metal coat-hanger into a (very quiet) musical instrument.

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.