Duolingo has risen to prominence over the past decade with its language learning app offering people around the world a low-cost or free option to learn dozens of languages. With a reported 500 ...

Duolingo’s long-awaited new math app is being unveiled—in beta—at the company’s annual Duocon conference Friday. Duolingo Math, which already has a waitlist for its beta testing on iOS devices, uses ...

Photo: Tabtor Math The fifth-grader who just last year was at least one grade behind in math is now a year ahead and helping his classmates. Sebastian Johnson’s grasp and meteoric understanding of ...