Pick the facts you want to know by heart. Flip the cards to study, type answers in a quiz, race the clock, or let Learn bring back the ones you miss until you know them all.
Pick one or more. Picking more than one mixes them into one deck.
Space or Enter flips the card · ← → move · on a phone, tap to flip and swipe to move. “I knew it” and “Not yet” go into your record and move on.
Right answers go through on their own. Press Enter to check a wrong one, or Enter on an empty box to skip.
Every card lives in a box. Get it right and it moves up a box and comes back less often. Miss it and it goes back to box 1 and comes back soon. Boxes 4 and 5 count as mastered.
Each square is one fact, colored by how well you know it. Tap one to practice it now. Faded squares aren’t in the deck you picked.