Get to know our machine learning model—and how it improves the learner experience!| Duolingo Blog
Spaced repetition has been around for a long time. If you’ve never heard the term before, it’s best described as flashcards on timers. an algorithm such as SM-2 or the more recent FSRS keeps track of how you did on the flashcard, makes a guess as to how long it could possibly wait to show you the flashcard again before you below, say, a 90% chance of getting it right the next time, and then schedules the flashcard for a new day.| hiandrewquinn.github.io
Take a quick tour of all of the learning and gamification features that help you reach your language goals on Duolingo!| Duolingo Blog