For centuries, mathematics was seen as the one discipline immune to contradiction — until one man proved it wasn’t. In the ...

1. Fast and Slow Piles. This works well as a starting or closing activity. Students sort math fact cards into fast and slow piles. This visual way of tracking facts highlights which facts come ...

Examining mistakes gives students a chance to discuss misconceptions openly and find new approaches to solving problems.

Discover the magic of compounding and why it's important for increasing wealth Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business ...

When it comes to the biggest challenge yet to solve, however, it seems there’s not much debate: “The Riemann Hypothesis has a ...