Viewers of an entertaining short video have an opportunity to save the world! All they have to do is solve the unstoppable blob riddle. Acute learners will have no problem with this problem.

Concepts

riddles, acute triangles, triangles, obtuse triangles, right triangles

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Additional Tags

math

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Instructional Ideas

• Pause the video before the solution and ask groups or individuals to offer solutions
• Ask remote learners to use Playdough blobs, video, and post their solutions

Classroom Considerations

• Most appropriate for geometry classes

Pros

• The "Dig Deeper" section includes a bonus problem

Cons

• None

Common Core

SL.9-10.1.a SL.9-10.3 SL.11-12.1.a SL.11-12.3