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For children to understand math, teachers must constantly make the connection between abstract numbers and real world examples, new research shows. If 3 is greater than 2, then ⅓ must be bigger than ½ ...

“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.

This news release is available in French. Montreal, August 27, 2013 — If 3 is greater than 2, then ⅓ must be bigger than ½ — right? Wrong. As thousands of students head back to school, many will use ...