TV on a Rolling Cart

Calculating Rectangular Area

From Cyberchase · 2007

Calculating Rectangular Area
3rd4th5thMath
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Summary

A Cyberchase segment in which the CyberSquad measures differently-shaped parcels of land, using tarps, fence posts and a rope grid to count squares and find the area. Connects counting squares to multiplying side lengths.

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Teaching resources

Discussion questions

Discussion

  1. How did the rope grid help the team measure the land?
  2. How is counting all the squares the same as multiplying length × width?
  3. When would multiplying be faster than counting?

Quick work-a-long

Vocabulary: area, length, width, multiply.

Try it: A garden is 6 m long and 5 m wide. What is its area?