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In this activity, learners construct a device that allows them to view 2-D images in 3-D.

In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

Learners use two mirrors to explore how images of images of images can repeat forever.

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