Most students treat past papers as a test of what they already know. They do a paper, check the score, feel good or bad, and move on. That wastes the most useful revision tool you have.
Start with topics, not full papers
In the first weeks, pull questions by topic across five or six years of papers. Do every quadratic question from 2019 to 2025 in one sitting. Patterns in how examiners ask about a topic become obvious very quickly.
Mark like an examiner
Use the marking scheme line by line. Method marks matter: a correct method with a slip in arithmetic can still earn most of the marks. Write the marks you earned next to each step so you can see exactly where you lose points.
Then move to timed papers
From about six weeks before the exam, sit one full paper a week under exam conditions. Keep a mistakes log: the question, what went wrong, and the correct method. Re-do every logged question a week later without looking at the answer.
- Weeks 1–4: topic sets from past papers
- Weeks 5–8: one timed paper per week plus mistakes log
- Final 2 weeks: re-do logged questions and your two weakest papers
What to do when you’re stuck
If the same topic keeps appearing in your mistakes log, that’s the signal to get help. Half an hour with someone who can see exactly where your method breaks down is worth hours of re-reading notes.