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In this activity, learners work together to create a life-sized drawing of the human nervous system.

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

In this activity, learners investigate the touch sensory system and discover how to plan and carry out their own experiments.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners investigate the olfactory system by conducting several experiments.

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 (4th activity on the page), learners test to see if saliva is necessary for food to have taste.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this activity, learners investigate the sense of hearing and plan and conduct their own experiments.