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In this activity, learners explore their eye pupils and how they change.

In this activity, learners discover a brain process called habituation.

We don't normally view people upside down and so our brains aren't accustomed to it.

In this online activity exploring our perception of "cuteness," learners adjust various factors (like pupil size or length of limbs) on a face, a cat, and a hammer.

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.

In this fun and interactive online exhibit, the straight lines of a tile wall appear to curve. The learner moves the rows of tiles and changes the color of the grout to achieve the intriguing effect.