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Make Math Moments Academy Forums Mini-Course Reflections 2019 MMM Virtual Summit Sarah Schaefer: Integer Operations – Discussions Reply To: Sarah Schaefer: Integer Operations – Discussions

  • Michelle Kovesi

    April 21, 2020 at 2:06 pm

    This was an excellent video! The key take-away for me was that we need to help students use patterns and reasoning to determine things that are hard to model.

    I loved how Sarah used the strategy of reasoning with patterns to develop the concept of multiplying two negative numbers. I’ve used a similar sequence to teach exponents. We know that:

    2^3 = 8
    2^2 = 4
    2^1 = 2

    Then, noticing the dividing by 2 pattern going down the lines, we can reason that 2^0 should be 1, and 2^-1 should be 1/2…