A classic math rule now handles infinity. New work strengthens the math behind physics and unbounded systems. % ...

Educators and administrators in recent years have been eager to reimagine math instruction. Troubled by high failure rates in ...

Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

A movement to help students understand rather than memorize has had sprawling effects, including pushback on teaching methods ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Somewhere at the edge of mathematics lurks a number so large that it breaks the very foundations of our understanding - and ...