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

This is a series of three quick science activities to do with a spoon, knife, and fork. In the first two activities, learners use the flatware to explore optics, mirrors, reflection, and distortion.

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

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