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Recommended for: Grades 3-6

Resource: Comparing Regular and Irregular Areas

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Media Type:
QuickTime Video

Length: 2m 29s
Size: 6.9 MB

In this video segment from Cyberchase, the CyberSquad must compare two parcels of land during a land rush. One parcel is an irregular shape and belongs to Hacker. The other parcel is a regular rectangle and belongs to Judge Trudy. By dividing each parcel into squares and triangles, they prove that the two shapes have the same area.

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Transcript (Rich Text Format Document)

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Teachers' Domain, Comparing Regular and Irregular Areas, published August 25, 2008, retrieved on ,
http://www.teachersdomain.org/resource/vtl07.math.measure.polg.regirregar/

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: If you had a piece of paper that was made up of three rows with three squares in each row, how would you find the area of that paper? If someone took a pair of scissors and cut that paper diagonally into two pieces, would those pieces still have the same total area if they were put together again?

Focus: As you watch this segment, notice how the CyberSquad has to compare the two parcels of land in the courtroom. Jackie says that even though Hacker’s land is not a regular shape, it is made up of regular shapes like triangles and squares. How does this idea help the squad solve the problem?