Hannah Moulton teaches Algebra 1. But before her 9th graders get started on graphing linear functions or solving quadratic equations, she makes sure that they have a much more basic skill down pat.

For all of the recent strides we’ve made in the math world—like a supercomputer finally solving the Sum of Three Cubes problem that puzzled mathematicians for 65 years—we’re forever crunching ...

In 2019, mathematicians finally solved one of the hardest math problems—one that had stumped them for decades. It’s called a Diophantine Equation, and it’s sometimes known as the “summing of three ...