Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

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Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

Sixteen NFL teams have winning records, but not all are considered true contenders in a year of wide-open races.

President Donald Trump’s approval rating hit low points of 44% in the two latest surveys released this week, with one showing three-quarters of Americans oppose the government shutdown and more than ...