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

This is an activity where learners will compare the different metamorphosis stages of amphibians.

In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

In this activity, learners will keep track of how much they can do in one minute. Instructors can pick something everyone will do for a minute, such as jumping up and down or drawing stars.

This activity (page 2) draws upon a familiar, computer-based concept related to visual resolution: pixilation.

In this quick and easy activity and/or demonstration, learners use two empty soda cans to illustrate Bernoulli's principle.

In this weather activity/demonstration, learners watch as a ping pong ball is suspended in a stream of air supplied by a hair dryer.

In this math activity, learners play a game and try to be the first player to identify their partner's rule. Learners identify the rule by finding commonalities between three familiar objects.

This "concept demonstration" provides learners with a concrete example (a pair of shoes in a classroom "cell") of what homology means.

In this exercise (Activity #2 on page), learners test their distance vision to evaluate their overall eyesight.