The GCSE maths revision that works is finding the weak topics, practising them with real exam questions, marking against the official mark scheme, and returning a few days later. This guide sets out what to revise in each area, the technique that saves marks, and a 12-week plan for summer 2027.
Re-reading notes feels like revisingPast papers checked against answers onlyOne topic at a time, never mixed
One step, not the whole subject.
A reverse percentage done as 15% off — the mark scheme would have caught it
What is ClassArc?
ClassArc is live one-to-one online maths tutoring for school-age children.
One teacher and one child, for 55 minutes. The same teacher every week.
Classes run inside our own classroom software, not a video call: a shared
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Revise GCSE maths by doing exam questions, not by reading about them. Find the weak topics, practise them with real past-paper questions, mark every answer with the official mark scheme, and come back to the same topic a few days later. Re-reading notes and watching videos feel productive but move marks very little.
Start with our GCSE maths topic checklist. Everything below assumes you know which topics are red, amber and green.
The same approach works on every board. AQA, Pearson Edexcel and OCR examine identical content; only the look of the papers differs, which is why practice should use your own board's papers.
By topic area
What to revise first in each GCSE maths area
For each area: the topics to secure first, and a question type that comes back series after series. Higher-only additions are marked.
Number
Fractions with all four operations, by hand
Percentages, prime factorisation, HCF and LCM
Standard form, rounding and estimation
Higher: surds, fractional indices, bounds
Comes up often
Write 360 as a product of prime factors, then solve a word problem about two buses leaving together.
The prime factor tree is the method mark; the LCM answers the story.
Where it usually goes wrong Estimation done with exact values. Round each number to 1 significant figure first, and write the rounded numbers down.
Algebra
Expanding and factorising; solving linear equations
Where it usually goes wrong "Compare the distributions" with one comparison. It needs an average and a measure of spread, each said in the context of the question.
Exam technique
Exam technique that keeps marks your child has already earned
A lot of marks go on technique rather than maths. These habits matter most.
Write the working, on calculator papers too. Longer questions give most of their marks for method; a bare wrong answer scores nothing.
Read the last line twice. "To 3 significant figures", "in terms of π" and "show that" each change what earns the marks.
Treat the non-calculator paper as its own subject. Written methods for multiplication, division, fractions and decimals need to be fast, not just correct.
Use the formulae sheet, but don't lean on it. It leaves out the area of a triangle and the volume of a cylinder, among others — see the formula sheet guide.
Pace it. Each paper is 90 minutes: roughly a minute a mark on AQA and Edexcel (80 marks), a little less on OCR (100 marks). Stuck? Move on and come back.
Sense-check answers. A person 15 metres tall or a probability of 1.3 means something upstream went wrong.
Never leave a blank. A formula, a substitution or a sketch can pick up a method mark on its own.
How to practise
Three revision methods with strong evidence, used together
Put all three into each session. Then finish with past papers marked the proper way.
M1
how a mark scheme labels a method mark — mark past papers with the scheme, not just the answers
i
Spaced practice
Come back to a topic several times, spread out — say two days, a week and three weeks after first revising it. It feels harder than one long session, which is exactly why it sticks.
ii
Retrieval practice
Test from memory before looking anything up. A blank page and "everything you know about circle theorems" beats re-reading the notes on circle theorems.
iii
Interleaving
Mix topics in one sitting: a ratio question, then probability, then algebra. The exam never labels which topic a question is testing, so practice shouldn't either.
The plan
A 12-week GCSE maths revision plan for summer 2027
Twelve weeks before the first paper, which in a normal year means starting around late February or early March of Year 11. It assumes four or five sessions of 30 to 45 minutes a week. Foundation students leave out the Higher items.
Week
Focus
What to do
1
Diagnose
Fill in the topic checklist. Sit a past paper, ideally all three, as a baseline.
2
Number
Fractions, percentages, indices, standard form. Non-calculator practice.
3
Algebra 1
Expanding, factorising, linear equations, rearranging, sequences.
Two full papers, one non-calculator and one calculator, marked with the scheme.
11
Weakest topics
The last reds and ambers. One more full paper.
12
Consolidate
Short mixed sets only. Look over the formulae sheet. Keep sleep and routine steady.
Throughout: ten minutes of non-calculator arithmetic most days, and each week's topics revisited one and three weeks later. With fewer than twelve weeks, do weeks 1, 6 and 10 in full and spend the rest on the red topics that recur most — fractions, percentages, ratio and equations, plus quadratics and trigonometry on Higher. Confirm the 2027 paper dates on your board's final timetable.
Past papers
How to use past papers so they actually raise the mark
Your own board's papers, free on its website. Question styles differ enough between boards to matter.
Mark with the official mark scheme. It shows where method marks sit and what counts as enough working.
Keep a wrong-questions list and redo each one a week later without looking.
Hold back two or three recent complete papers for timed practice in the final month.
Alongside revision
How ClassArc classes fit around GCSE revision
In the revision months, a ClassArc teacher builds each 55-minute one-to-one class around your child's checklist and past-paper results rather than a fixed scheme, after checking what the school is revising that week. It is the same teacher throughout, so nothing is re-diagnosed from scratch.
Teacher and student work the same past-paper question on a shared worksheet, so the exact line where a method breaks is visible and fixed on the spot. Homework is a short set of exam questions on that day's topic, reviewed before the next class. Two classes a week suits most students; three in the final stretch.
“
The mark scheme is the most underused revision resource there is. It tells you what the working has to show.
Structured revision usually starts about twelve weeks before the first paper, in late February or March of Year 11. Regular practice on earlier topics through Year 10 and the autumn of Year 11 makes those twelve weeks far lighter.
How many hours a week should my child revise GCSE maths?
The plan on this page assumes four or five sessions of 30 to 45 minutes a week. Short, frequent sessions with topics mixed together do more than one long weekend session.
Are GCSE maths past papers free?
Yes. AQA, Pearson Edexcel and OCR publish past papers and mark schemes on their own websites, though the most recent series is sometimes restricted to schools for a period.
Should Foundation students use the same revision plan?
Yes, minus the Higher items in each week. The time saved goes on making the shared topics fully reliable, which is where Foundation marks come from.
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