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In this activity (3rd on the page), learners conduct a series of tests to find out which of their eyes is more dominant.

In this activity, learners make a Benham Top to explore visual illusions and optics.

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.

In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.

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