The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

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 ...

In the United States, 12% of married couples with at least one spouse in their 30s or 40s have two incomes and no kids.

Grammar expert June Casagrande tackles the use of hyphens with a close look at eight multiword terms that writers sometimes get wrong.

Inflation data for September came in lower than expected at 3.8% and it will impact how much benefits rise next year. Money reporter Jess Sharp brings you everything you need to know, as well as all ...

Farmland investment offers an average annual return of 10.2%, outperforming most assets since 1992. Farmland's low volatility and minimal correlation with stocks provide a reliable diversification ...

Transgender people come from every region of the United States and around the world, from every racial and ethnic background, and from every faith community. Transgender people are your classmates, ...