Viewers learn how eyes work to focus on objects. They see how a lens with a different shape changes the point of focus, requiring people to wear glasses or contacts. Viewers then learn how humans' eyes are different from other animals. 

Concepts

eyes, sense of sight, glasses

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Additional Tags

science

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Instructional Ideas

• Script questions after previewing video and ask pairs of learners your questions throughout the video
• Use video to introduce a unit on senses or on the human body

Classroom Considerations

• Video is actually five minutes long; last 1.5 minutes are advertising

• This video is hosted on YouTube

Pros

• Video uses high-quality images and diagrams
• Includes numerous links to other related videos
• Speaker is engaging, talks at a good pace, and includes interesting facts

Cons

• None

Common Core

RST.9-10.2