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In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.

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 optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

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

In this activity, learners explore reaction time and challenge themselves to improve their coordination. Do you want to move faster? Catch that ball that you never seem to see in time?

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 (16th on the page), learners play a variation of the "I Spy" game to explore color. Learners work in teams with each team assigned a color.

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

Learners test their memory and ability to learn memory strategies in this game. Partners start with an array of poker chips, coins, or paper squares on the table.

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

In this activity (page 2 of PDF), learners play with a lens and a piece of paper to focus an image on the paper. Learners look at different things, and see how the lenses affect the image.

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

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 (on page 146 of the PDF), learners will explore the effects of increased carbon dioxide in the bloodstream.

This mirror-tracing activity related to proprioception is a visual and motor test that involves learning a new motor skill.

In this activity related to flight, learners conduct two simple tests to explore how lift works.

In this activity about flight, learners explore how high they can jump. Learners dip their finger in ink or dirt, then jump as high as they can and mark paper attached to the wall.

In this activity related to flight, learners build a tiny stream channel to investigate how fluids (air and water) change speed as they flow between and around objects.