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

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

Jumble is a daily word puzzle released and operated by the Chicago Tribune newspaper. Refreshing daily, each puzzle gives players four words (six on a Sunday) to unscramble. There’s then a cartoon ...