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Recommended for: Grades 3-5

Resource: Triangles

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Media Type:
QuickTime Video

Length: 2m 01s
Size: 5.5 MB

In this video segment from Cyberchase, the CyberSquad must build a path to cross a stream of hot lava. They find a pile of triangle shaped tiles which float in the lava and don’t melt. They work together to try to figure out how to create a path made of the triangle tiles that has no gaps and no overlaps. Check out the video segment "Hexagons" to see if the CyberSquad makes it across the stream of lava.

Alternate Media Available:

Transcript (Rich Text Format Document)

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Teachers' Domain, Triangles, published October 7, 2008, retrieved on ,
http://www.teachersdomain.org/resource/vtl07.math.geometry.pla.triangles/

Frame and Focus
Follow Up
Connections
Standards

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Here are some Frame, Focus and Follow-up suggestions for using this video in a math lesson.

What is Frame, Focus and Follow-up?

Frame: Fitting together the same size shapes with no gaps or overlaps is called tessellating. Do all shapes tessellate? Why or why not? What kinds of shapes do you think will tessellate?

Focus: In this video segment, you will see the CyberSquad attempt to build a path made of triangle tiles with no gaps or overlaps. You’ll notice their first attempt leaves many gaps. What does Matt do with some of the triangles to remove the gaps?