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In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site.

How many colors make black? Gather as many water soluble black markers as you can find.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.