Study tool🃏 Spaced repetition

Flashcards

Every quiz question in the course, turned into a deck that schedules itself. Cards you get right come back later; cards you miss come back soon. Five minutes a day beats an hour once.

Your deck

One square per card, coloured by how well you know it. Hover to see the chapter.

unseenlearningshakyfamiliarknown

🧠

How the scheduling works

A simplified SM-2: each card has an ease and an interval. “Again” resets it to today, “Hard” nudges the interval up slightly, “Good” multiplies it by the ease, and “Easy” multiplies it more and raises the ease. Intervals grow 1 → 3 → 7 → 16 → 35 days, so a card you know well disappears for a month. Progress is stored in this browser only.