“Who would draw a picture to divide 2/3 by 3/4?” asked Marina Ratner, a professor emerita of mathematics at the University of California at Berkeley, in a recent Wall Street Journal opinion piece.

A Wall Street Journal opinion article drew considerable attention to Common Core (CC) math standards—particularly the sixth-grade standard for fractional division— in early August. In it, math ...

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Dividing Fractions: When dividing fractions, you can achieve the same result by multiplying the first fraction by the reciprocal of the second fraction. A fraction consists of a numerator and a ...