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

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).

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

Imagine cruising down the open road, the hum of the engine beneath you, the wind in your hair, and the American landscape ...