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My youngest son is a whiz at math - as long as he can figure out problems in his head. But his uncanny ability to make sense of numbers is lost when he looks at a formulaic math problem. When he was ...

With the possible exception of fractions, no elementary math topic or skill stresses students out more than long division does. And it’s so unnecessary--not just the stress, but the skill. Think about ...

But the discipline of mathematics research was in crisis in the first decades of the 20th century. The nature of proof was in ...