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In this activity about the baroreceptor reflex (BR) arc (page 123 of the PDF), learners discover the importance of maintaining adequate arterial blood pressure through a role playing exercise.

In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.

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, learners explore how their sense of smell affects their taste buds. Learners taste different flavored jelly beans while holding their nose.

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

In this online brain stumper, the bottom half of a series of letters is covered. You may think you know what it says, but remove the black bar to see if you're right.

In this detailed activity (on pages 9-18), learners investigate the body parts of a parasitic ascaris worm by making and dissecting clay models.

In this activity, learners investigate circulation and measure their own your heartbeat. A heart rate, or pulse, is the number of times the heart beats per minute.

In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

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

In this nutrition activity, learners explore food labels and consider the nutritional value of foods. Learners also explore units of measurement commonly used on food labels.

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

In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.

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

In this activity, learners conduct a simple test to find their blind spot.

In this activity (on page 134 of the PDF), learners explore reaction time.

This is an activity about lung capacity. Learners will measure their own lung capacity using a homemade spirometer.

In this activity about light and perception, learners create pictures in thin air.

In this activity, learners discover if carbon dioxide has an effect on temperature.

Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.