DiscoverMath is Figure-Out-Able with Pam HarrisEp 138: To Include or Not: An Important Subtraction Pitfall
Ep 138: To Include or Not: An Important Subtraction Pitfall

Ep 138: To Include or Not: An Important Subtraction Pitfall

Update: 2023-02-07
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Description

Do you ever fall into the "off by one" trap? Do your students ever get confused about counting objects vs counting distance? In this episode Pam and Kim use a Problem String to help build intuition about everyday subtraction problems.
Talking Points:

  • Experience a Problem String to build relationships
  • Fencepost Problems are all over the place
  • Students can't just pluck numbers out of Fencepost problems
  • Cathy Fosnot's replacement unit, "Measuring For the Art Show"
  • Other places these kind of problems show up
  • Kim explains her strategy


See episode 111 for more about "Measuring For the Art Show"!

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Facebook: Pam Harris, author, mathematics education

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Ep 138: To Include or Not: An Important Subtraction Pitfall

Ep 138: To Include or Not: An Important Subtraction Pitfall

Pam Harris