Math difficulty is still not well understood. But a systems approach may lead to advances in diagnosis and treatment.

Nearly twenty years after I graduated high school and my last calculus class, I still get that nightmare where I’m at the exam for a calculus course I somehow forgot to attend, or that I faked my way ...

A fireworks display launches 40 fireworks in sequence. Each firework reaches a random height, independent of the height that any other firework reaches. Every time you see a firework that shoots ...

Some of the most satisfying number puzzles require little mathematical know-how. In fact, cracking the one below calls for thinking that is quite nonmathematical. I don’t know where or when I first ...