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

Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.

Do you have a hard time matching paint swatches with your furniture? When you consider human perception, color is context dependent.

Why should we wear masks? Do masks work? Do some masks work better than others? Learners find out in this activity.

In this "Sid the Science Kid" activity, learners set up a simple experiment to find out how sunscreen counteracts the effects of the sun.