1. One card, one fact
The single most important rule. A card asking "describe the causes, course and consequences of the war" is not a flashcard, it is an essay prompt, and you cannot pass or fail it cleanly. If you get two of the three, what do you rate it? The scheduler needs a binary signal and you have given it mush.
Split it. Six atomic cards, each testing one thing, each unambiguously right or wrong. The deck gets bigger and the reviews get much faster — an atomic card takes three seconds, and you actually know whether you knew it.
2. Understand it before you card it
Flashcards are for retention, not comprehension. Memorising something you don't understand produces a fact you can recite and cannot use, which is worth roughly nothing in any exam that asks you to apply it. Learn it first — read, do problems, argue with it. Card it after.
3. Make the question unanswerable by guessing
If the answer is inferable from the phrasing, the card tests nothing. "The powerhouse of the cell is the ___" gives it away by cadence — you have written a card you can pass without knowing anything. Watch for cards where the answer's length, the grammatical article, or the shape of the sentence is a tell.
4. Write in your own words
Copying a definition verbatim from a slide tends to produce a memory of the *sentence* rather than the *idea* — and it fails the moment the exam phrases the question differently, which it will. The act of rewording is itself a comprehension check: if you can't restate it, you haven't understood it, and you have just discovered that for free.
The exception is where exact wording genuinely matters — a legal test, a statutory definition, a formula, an oath. Then quote it precisely and know that you're doing so deliberately.
5. Add context, or you'll build a card that only works in the deck
A card reading "1917?" is meaningless in six weeks and, worse, is quietly answerable in the deck because it sits between two other Russian Revolution cards. You are cueing off the deck order rather than retrieving. Give it enough context to stand alone — "In the Russian Revolution, what happened in October 1917?" — and the card survives being shuffled.
6. Use images where the image is the content
For anatomy, chemistry, circuits, geography — anything spatial — a picture with a hidden label is dramatically better than a verbal description of the picture. Describing a structure in words tests your vocabulary. Pointing at it tests your knowledge.
7. Delete cards without guilt
A card you have failed nine times is not a difficult card, it is a *badly written* card, or one you don't yet understand. Both mean the same thing: take it out of the deck. Go and learn the thing properly, then write a new card. Leaving it in place to torture you daily is a decision, and it is a bad one.