Multiplying and Dividing

Multiplying and Dividing

Use Reasoning

Opening

Use Reasoning

Watch the video that shows Jan and Carlos using reasoning about multiplication.

  • What does Jan say about one thing she knows about multiplication?
  • Does Carlos agree with what she says?
  • What reasoning does Carlos use to support his opinion?
  • What conclusion does Carlos first come up with?
  • How do Jan and Carlos refine that conclusion?
  • Do you agree with their conclusion?
  • Do you think you would get a different conclusion if you started with a number less than 1?
  • Test this idea.

VIDEO: Mathematical Practice 2

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