Tag Archives: division

Why Do We Invert & Multiply? An Explanation

Posted on April 9, 2016 by jgvadnais

Ours is not to reason why, just invert and multiply.  WHY! Keep Change Flip WHY! My district’s focus, this year, has been conceptual understanding.  Therefore my coaching colleagues and I have been searching for a clear explanation to why we invert … Continue reading →

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Efficiency is in the Eye of the Beholder

Posted on October 14, 2015 by jgvadnais

For the past two years, I’ve heard many math educators push the idea of mathematical efficiency. The more I hear the word, efficient, the more I cringe for I feel its usage suggests: Students are thinking inefficiently in defiance. The algorithm is the … Continue reading →

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