How to Make and Use Flashcards for Revision: The Leitner System Explained
Flashcards are one of the oldest revision tools around, but most students use them badly. They write out a definition, flick through the pile once, decide they "know it," and move on. A week later, the fact is gone. The problem isn't flashcards. It's how they're used. Done properly, flashcards combine two of the most well-evidenced revision techniques there are: active recall (testing yourself rather than re-reading notes) and spaced repetition (reviewing information at increasing intervals so it sticks in long-term memory). The tool that ties these together is the Leitner System, a simple box-based method for deciding which cards to review and when. This guide covers how to write flashcards that actually work, whether to go paper or digital, and how to run a Leitner-style routine without it eating your whole evening. Why Flashcards Work (When They're Done Right) A flashcard forces you to retrieve information from memory rather than just recognise it o...