Word problem “key words” charts abound on lesson-sharing sites like Teachers Pay Teachers. These graphic organizers are designed to remind students which math words signal different operations.

In a nationally representative EdWeek Research Center poll, 29% of math teachers said less than a quarter of their English ...

De Grey pitched the problem of finding the minimal five-color graph to Terence Tao, a mathematician at the University of California, Los Angeles, as a potential Polymath problem. Polymath began about ...