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In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water. Learners discover that a thin film creates iridescent, rainbow colors.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.