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In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper.

In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

In this activity, learners play a series of simple games to investigate navigation without visual and sound cues.

In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.