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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

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.

In this activity (5th activity on the page), learners explore how what you see influences taste. In experiment 1, learners taste five sodas, one of which is clear soda with orange food coloring.