Your eye cells come in different shapes and serve different functions; rod-shaped cells see shapes and cone-shaped cells see color. Video 18 in the series of 47 teaches all about vision. Scholars see (no pun intended!) how vision works. Beginning with an optical illusion, the narrator walks individualss through the structures of the eye and their functions in vision. 

Concepts

sense of vision, eyes, retina, cones

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Additional Tags

science

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Instructional Ideas

• Have pairs or small groups create 3-D models of the eye with labeled parts and functions; challenge some groups to make eyes that are considered "near-sighted" and some that are "far-sighted" to show changes in people's eyes who wear glasses/contacts
• Explore how LASIK surgery works and what it does to the eye

Classroom Considerations

• Use closed captioning to help learners follow along and understand concepts

• This video is hosted on YouTube

Pros

• Great hook using an optical illusion
• Video uses high-quality diagrams and illustrations

Cons

• None

Common Core

RST.9-10.2