Part of the joy of the winter break is that it’s a chance to read something longer than twenty pages. I spent part of it reading Cathy O’Neil’s “Weapons of Math Destruction,” which is well worth ...

You have /3 articles left. Sign up for a free account or log in. The idea of “reflection” is one of several Euclidean motions in a plane that are studied in ...

Students are barely beginning to recover from a historic decline in math performance. Across every grade and region of the country, students in every racial, income, and disability group have ...