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How Fast Are You?
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This activity is designed to let learners measure their reaction time or response time to something they see.
Shrinking Spot
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In this activity, learners control the (apparent) size of a hole with their brain.
Slowing the Flow
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In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water.