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In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.

In this activity (12th activity on the page), learners conduct an experiment to demonstrate how muscles are constantly feeding information to the brain about what they are doing.

This activity is about how you form mental images of your body's position in space, independent of vision. Can you take a sip of water from a cup with your eyes closed?

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

In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.