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In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.

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.