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In this activity (4th on the page), learners conduct a series of tests to find out which of their ears is more dominant.

In this activity (11th activity on the page), learners use pennies to test their hearing acuity.

String Thing is an interactive online game in which learners change a virtual string's tension, length, and gauge to create different musical pitches.

In this activity, learners investigate how bats use echolocation to navigate. One learner is assigned to be a bat, while the other learners are selected to be either moths or trees.