People on TikTok are stunned that 29 multiplied by 3 is 87. Number values can be very psychological, "sounding" one way while being another. Division rules and common core principles can help unwire ...

Time to test your brain! Are you a puzzle person? Most of these hard math problems aren’t straightforward arithmetic. They challenge you to look at problems a different way, testing your logic and ...

"Regular" high school seniors in Australia faced an astonishing statistics problem in their exams. Math is having a high profile year, from common core to Australia's high school exit exams. The math ...

I enjoyed reading your recent discussion with Alex Baron, “How Much Autonomy Should Teachers Have Over Instructional Materials? ” In particular, I was struck by your skepticism about whether ...