Quick answer: If you want to remember what you study, do more than reread your notes. Test yourself from memory, revisit the material over several days, and correct what you get wrong. Research supports two particularly useful techniques: retrieval practice and spaced practice.
1. Close the book and retrieve the answer
After studying a topic, close your textbook and write down the main ideas in your own words. Try answering practice questions without looking at the answer first. Then check your work and fix mistakes. This is retrieval practice: strengthening learning by bringing information back to mind, rather than simply looking at it again.
2. Spread revision across several days
Instead of studying a chapter only once in a long session, return to it after a gap. For example, review it briefly on the day you learn it, test yourself the next day, revisit it three days later, and try again a week later. Adjust the intervals to the difficulty of the subject and how well you remember it.
This is spaced practice. A major review in Nature Reviews Psychology describes spacing and retrieval practice as evidence-backed approaches that can improve learning across subjects and age groups.
3. Mix questions, not just pages
Once you understand the basics, mix different kinds of questions. In mathematics, for instance, practise identifying which method a problem needs before solving it. In science or history, alternate between definitions, explanations and “why” questions. This helps you learn to choose the right idea, not just repeat a familiar example.
4. Explain it simply
Explain the concept aloud as if you were teaching a younger student. If you get stuck, that is useful information: return to that part of the lesson, understand it, then try explaining it again without notes.
5. Protect your attention
Put your phone away during a short study session, set one clear goal, and take a brief break after focused work. Sleep also matters for learning and memory, so an all-night cram session is not a reliable substitute for preparation spread over time.
A simple revision plan to try
- Today: Study the topic, then answer five questions without notes.
- Tomorrow: Spend 10 minutes recalling the key points and checking mistakes.
- In three days: Try a fresh set of questions.
- In one week: Do a short mixed quiz covering this topic and older material.
Frequently asked questions
Is rereading completely useless?
No. Rereading can help you understand material, especially at the beginning. But it is easy to mistake familiarity for memory. Combine reading with closed-book recall and practice questions.
How long should I study each time?
There is no single perfect duration. Start with a manageable 20–30 minute focused session, take a short break if needed, and build a routine you can maintain.
Sources: Nature Reviews Psychology: The science of effective learning with spacing and retrieval practice; The Learning Scientists.
