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This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match.

This is written as a display, but can easily be adapted to a hands-on activity. Learners observe and shake containers of shiny liquids.

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.