More Than an Image
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Humans, like most other mammals, are primarily sight oriented, which means that our eyes are our dominant sense organs. The reason we rely so heavily on vision most likely lies in our evolutionary history. Millions of years ago, the way of life of the ancestors of Homo sapiens favored those with good vision and selected against individuals who could not see as well.

In this lesson based on NOVA’s "Mystery of the Senses: Vision,” students explore how their eyes receive visual information from the world around them, and how our brain makes sense of it. This lesson pieces together the components of human visual perception, and includes a fun and engaging classroom activity that allows your class to view optical illusions and further investigate the human visual system.

WATCH: http://to.pbs.org/1M15DXU