Teachers share how they model problem-solving, build conceptual understanding of equations, and collaborate with math educators.

The experts wanted to solve the problem in n dimensions—does a needle that is rotated along all n spatial directions always cover an n -dimensional volume?

By proving how individual molecules create the complex motion of fluids, three mathematicians have illuminated why time can’t flow in reverse.

What Is Kakeya's Needle Problem, And Why Do We Want To Solve It? A tower of problems rests on top of this deceptively tricky question.

Contrast Singapore math with what Campbell called “a show-and-tell model” of math instruction “where somebody shows you how to solve a problem and you practice doing it over and over and ...