Your class knows the Pythagorean Theorem, but can they prove it? A series of three videos shows two proofs of the Pythagorean Theorem and use it to classify triangles. 

Concepts

pythagorean theorem, geometric proofs

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Additional Tags

math

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Instructional Ideas

• Post videos as a resource for absent pupils or those that need extra instruction
• Pause the video at regular intervals to ask clarifying questions

Classroom Considerations

• Requires Internet access to view the video
• The first in a series of four trigonometry lessons

Pros

• Reasonable length videos that pupils can manage easily
• Clear instruction with a focused objective

Cons

• Third video is not related to the proof of the Theorem, which doesn't follow the title of the lesson

Common Core

HSG-SRT.B.4 HSG-SRT.C.8