Most people study by re-reading and highlighting. It feels productive, but the research is blunt: it is among the least effective things you can do. The techniques below are the ones that consistently show up in the evidence — and they are simple to start.
Active recall means testing yourself — trying to retrieve an answer from memory — rather than reviewing it in front of you. The act of struggling to remember is what strengthens the memory, an effect called the testing effect. A closed book and a blank page beat a re-read chapter almost every time. Flashcards are active recall in its purest form: the front asks, and you must produce the answer before you flip.
Spread your practice over time instead of massing it. Studying a topic for 20 minutes on four different days beats 80 minutes in one sitting. This is the spacing effect — see spaced repetition, explained for how to automate it.
Rather than drilling one topic to exhaustion (blocked practice), mix related topics within a session — algebra, then geometry, then word problems. Interleaving feels harder and slower, but it trains you to choose the right approach for a problem, which is what exams actually test.
Attention fades, so work in focused blocks with short breaks — the Pomodoro technique uses roughly 25 minutes on, 5 minutes off. Removing your phone from the room does more for focus than any app. HopQuiz includes a built-in focus timer you can set to your own focus and break lengths.
Ask why and how, and connect new facts to things you already know. Explaining an idea in your own words — even to an empty room — exposes the gaps that highlighting hides.
Put it together: build good cards, test yourself with active recall, and let spaced repetition schedule the reviews. Open HopQuiz or browse free decks to start.