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Three Circles of Pigments
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In this activity, learners overlap the three primary colors to see how all other colors are made.
Penny Cup Game
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In this optics activity, learners conduct an experiment to find out why two eyes are better than one!
Dark Adaptation
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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.