Spanish Days of the Week Flashcards

Spaced repetition is a learning technique backed by decades of cognitive science research. It works by scheduling review of each flashcard at increasing intervals, timed to catch the card just before you are likely to forget it. This exploits the psychological “spacing effect”: information reviewed at spaced intervals is retained dramatically better than the same information reviewed in a single long session.

The algorithm used here is a simplified SM-2 variant, the same underlying algorithm that powers Anki and early Duolingo. When you rate a card “Again”, it resets to a short interval. “Good” increases the interval by a factor of 2-3. “Easy” increases it further. Over time, cards you know well appear less frequently, and cards you struggle with appear more often.

For seven days of the week, most learners reach confident recall with 3-5 short sessions spread over a week. Heritage speakers often achieve this in 1-2 sessions for the core words, then benefit from the example-sentence cards for grammar practice.