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In this activity (1st on the page), learners conduct a series of tests to find out which of their hands is more dominant. In other words, are they right-handed or left-handed?

In this activity (18th on the page), learners conduct an experiment to examine memory.

In this activity (23rd on the page), learners conduct an experiment to examine memory and learning.

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 (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light.

In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand.

In this activity (1st on the page), learners explore circadian rhythms by keeping track of their body temperature.

These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

In this activity (1st on the page), learners keep a "SLOG" or Sleep Log to study their sleep patterns.

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