How to memorize faster with flashcards (spaced repetition, simply)
Short answer: Review a card right before you would forget it. Grade each flashcard honestly, bring missed cards back tomorrow and known ones after longer and longer gaps. A few minutes every day beats one long cram session.
1. Make the card small
One question, one answer. "Mitochondria → makes energy (ATP)" works; a whole paragraph does not. Split big topics into several cards.
2. Try to recall before you flip
Say the answer in your head first, then flip. The effort of pulling it from memory is what makes it stick — reading the answer straight away feels easier but fades faster.
3. Grade yourself honestly
Use three grades: Didn't know, Unsure, Knew it. Be strict — "sort of" is Unsure, not Knew it.
4. Space the reviews
A simple Leitner schedule with 5 boxes is enough: box 1 tomorrow, then 3 days, 1 week, 2 weeks and 1 month. Knew it moves a card up a box; Didn't know sends it back to box 1.
5. Review every day, briefly
Open your due cards once a day. Ten to twenty cards take about three minutes. Missing a day is fine — just review what is due when you come back.
Before an exam
Spaced repetition is for the long run. The night before a test, it is fine to go through every card in a deck once more, then sleep.
FAQ
How many new cards a day?
Start with 10 to 20 new cards a day. Due reviews always come first.
Is it better than re-reading notes?
Yes — testing yourself and spacing reviews are two of the most reliable ways to remember.
Do I need a special app?
Paper index cards work, but an app keeps the schedule for you and tells you what is due.