Add Yahoo as a preferred source to see more of our stories on Google. Duolingo, a quick-and-easy learning app that boasts more than 128 million monthly active users worldwide — mostly for its language ...

AND OUR BACK TO SCHOOL COVERAGE NOW. HAVE YOU HEARD ABOUT THE SUMMER SLIDE, HOW STUDENTS LOSE A LITTLE BIT OF WHAT THEY LEARNED IN THE PREVIOUS SCHOOL YEAR? DURING SUMMER BREAK? WELL, ONE LOCAL TECH ...

Homescreen Heroes: Duolingo Math teaches up to grade 8 math in a fun and engaging way ...