Right, acute, or obtuse: how do you know? Learners observe how to use the Pythagorean Theorem to determine the type of triangle from a set of side lengths. The video includes an example of each triangle type.

Concepts

pythagorean theorem, pythagorean triples, right triangles, obtuse triangles, acute triangles

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Additional Tags

math

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Instructional Ideas

• Post the video as a resource for absent pupils or those needing extra instruction
• Use the video to flip your classroom

Classroom Considerations

• Builds on the previous two lessons in this video series of lessons

• This video is hosted on YouTube

Pros

• All three examples are on the screen at the same time, which allows for comparison
• Explanations are clear and proceed in a logical manner

Cons

• Does not include real-life examples, which detracts from the relevance of the concept

Common Core

8.G.B.8