How to Study With Flashcards Using Active Recall

Why active recall works

When you reread notes, the material feels familiar, which is easy to mistake for knowing it. Trying to answer a question without looking forces your memory to do the work, and the effort of retrieving an answer, even when you get it wrong, strengthens the memory. Spreading your reviews over several days, known as spaced practice, adds to the effect compared with cramming everything into one session.

How to write a good card

• One idea per card. If an answer has five parts, split it into five cards or ask for a list of the parts as one deliberate question.
• Ask a real question. 'What does the mitochondrion do?' is better than a vague prompt like 'Mitochondria'.
• Write in your own words. Rephrasing the idea is itself a form of studying.
• Prefer questions that need recall over questions answered by recognizing a word. Yes or no questions are rarely worth a card.
• Use fill-in-the-blank (cloze) cards for definitions and formulas: 'The weighted grade is the sum of score × ____'.
• Add a small cue such as the topic or chapter, so you can find and fix a card later.

Example: Weak: 'Photosynthesis'. Better: 'Where in the chloroplast do the light-dependent reactions take place?' Answer: 'In the thylakoid membranes.'

Reviewing: a simple schedule

You do not need special software to benefit from spacing. A simple pattern many students use is to review new cards the same day, then again after one day, three days, a week and two weeks, moving a card to a longer gap each time you get it right and back to the start when you miss it. Treat these numbers as an example, not a rule, and adjust to your exam date.

• Shuffle the deck so you cannot rely on the order.
• Say or write your answer before flipping the card.
• Sort cards into 'knew it' and 'still learning' piles and spend your time on the second pile.
• Short sessions of 15 to 20 minutes work well, and the focus timer can keep them honest.

Checking your cards before you trust them

Cards you wrote quickly can contain mistakes, miss important points, or phrase a question ambiguously. Before you start studying, read every card against your source, delete those that are wrong or trivial, and rewrite any that you would not be able to answer in your own words. A card with an error is worse than no card, because you will memorize the error. Fix it as soon as you notice, and do not put anything on a card that you could not point to in your notes or textbook.

Exporting to other apps

Most flashcard apps can import a plain text file. Anki, for example, can import tab-separated text where each line has a front, a back and optional tags. When you import, check that special characters and line breaks appear correctly, and that quotation marks in your cards did not split them into extra fields.