A simple math problem sparked heated debate on Chinese education forums two years ago.

You can probably think of a time when you’ve used math to solve an everyday problem, such as calculating a tip at a restaurant or determining the square footage of a room. But what role does math play ...

Keith Perkins, foreground, works through an algorithm for calculating ladder rung spacing in Linn-Benton Community College’s math for welders class. Credit: Jan Sonnenmair for The Hechinger Report The ...