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

Natalie Grabow became the oldest woman ever to finish the grueling, 140.6-mile Ironman World Championship triathlon last month. She's already planning more races.

The earliest known evidence for the Pythagorean Theorem comes from an ancient clay tablet called, “IM 67118.” This tablet ...