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In this activity, learners play a simple card game to learn the sequence of events in the transmission of nervous system signals.

In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.

In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through.

During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.