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In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

In this activity, learners construct a device that allows them to view 2-D images in 3-D.

This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

In this activity, learners construct a three-dimensional ambiguous cube to explore visual illusions and how our brains interpret or misinterpret information.

In this quick and simple activity about reflexes (at the top of the webpage), learners conduct a simple test to explore pupillary response.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.