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

Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.

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

In this activity about light and refraction, learners discover how a lens creates an image that hangs in midair.

In this activity (5th activity on the page), learners explore how what you see influences taste. In experiment 1, learners taste five sodas, one of which is clear soda with orange food coloring.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.