TV on a Rolling Cart

Multiplying Bigger Numbers

From Cyberchase · 2007

Multiplying Bigger Numbers
3rd4th5thMath
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Summary

A short Cyberchase math segment: the CyberSquad uses multiplication to figure out how many clones Hacker has made. A quick, story-based way to show why multiplying larger numbers beats counting one by one.

Viewer safety

All ages
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Our rating is a quick teacher-to-teacher guide — preview before showing.

Teaching resources

Discussion questions

Discussion

  1. Why was counting the clones one at a time a bad idea?
  2. How did multiplication make the job faster?
  3. Where else could you use multiplication instead of counting?

Quick work-a-long

Vocabulary: multiply, factor, product.

Try it: If there are 12 rows of 15 clones, how many clones is that? Show your work.

Multiplying Bigger Numbers — TV on a Rolling Cart