To revise for GCSE maths, treat it as a two-year build rather than a revision-week sprint. Work the number, algebra and ratio content first, since the rest of the specification leans on it, and schedule geometry separately — it is the thinnest area for most revision plans. From Year 11 onward, sit past papers from your own board, mark them against the scheme, and let the losses choose what you revise next.
Brilliant teaches most of the number, algebra, ratio, probability and statistics content in the Department for Education's subject content for GCSE Mathematics, by making you solve problems rather than watch explanations. Geometry and measures is the weak area. And Brilliant does not teach the exam: no past papers, no mark schemes, no timing.
Does your tier change the answer?
GCSE maths is sat at one of two tiers — Foundation, graded 1–5, and Higher, graded 4–9 — and both are drawn from the same six areas of the DfE’s subject content: number; algebra; ratio, proportion and rates of change; geometry and measures; probability; and statistics. Higher does not add a seventh area. It adds the extra content the DfE prints in bold inside the six.
Brilliant’s lessons are not sorted by tier, so use your board’s specification, which marks Higher content explicitly, to decide what is in scope for you. Do not guess from how advanced something sounds — several that look like Higher material are examined at Foundation. Everything below applies to both tiers; Higher students simply go further into the same topics.
Which parts of GCSE does Brilliant teach?
Algebra is the deepest match by a distance — the great majority of the algebra statements have Brilliant lessons behind them. Solving linear equations with the unknown on both sides is in Linear Equations; factorising, completing the square and the quadratic formula run through Quadratics, including Completing Any Square; simultaneous equations are in Linear Systems; sequences and the nth term are the whole spine of Visual Algebra, from Building Patterns to Quadratic Patterns. Function notation, inverse functions and composite functions are in Introduction to Functions, starting at Finding the Rule.
Number is strong on indices, surds and standard form. Exponents and Radicals is one of the largest contributors to this framework: index laws at The Product Rule for Exponents, prime factorisation, fractional indices, simplifying surds at Scaling Square Roots, and standard form at Powers of 10. The four operations on fractions and negatives come from Fractions and Negative Numbers, which are the repair points if arithmetic is what goes wrong.
Ratio and percentages are covered where the arithmetic is. Ratio notation, sharing in a ratio and unit rates are in Proportional Reasoning, percentage change in Percents, and growth, decay and compound interest in Exponential Functions.
A new topic covers the everyday end of algebra. Real-World Algebra is 12 lessons on putting letters to work: substituting into a formula at Using Formulas and writing one for a situation at More Than One Variable, scaling a price up or down to compare two offers at Comparing Offers, and taking a percentage of an amount by building up from 1% at Calculating Percentages. It is pitched below GCSE, so treat it as Foundation-tier repair work rather than new ground.
Probability and statistics are well served. Possibility spaces, Venn diagrams, combined events and Conditional Probability come from Probability and Chance and Probability in Data; averages, spread and box plots from Everyday Statistics; charts from Exploring Data Visually; and scatter graphs and lines of best fit from Regression.
Geometry and measures is the thin one. What is there is good: transformations in Coordinate Transformations, Pythagoras and circle equations in Coordinate Geometry, right-angled trigonometry and exact values in Trigonometric Functions, vectors in Vectors, and angle facts, area, surface area and volume in Geometry and Measurement — but that last topic is 25 lessons pitched well below GCSE, and there is no GCSE-level geometry topic behind it.
Three post-GCSE topics reach back into the specification. Limits opens on sequences: Sequences and Recursive Sequences generate terms from a term-to-term or a position-to-term rule, and Sequences as Functions reads the rule back off a graph. Derivatives opens on rate of change: Constant Rate of Change and Velocity do average rate of change over an interval, and Local Linearity reads the gradient at a point on a curve — the Higher-tier work on gradients of chords and tangents — and further in, Graphing the Derivative tracks that gradient along a whole curve and Local Extrema uses it to locate turning points. Integrals opens on the other half of that same statement, areas under graphs: Area Under a Graph totals the area under a step graph, Signed Area under Velocity Graphs reads a distance off a velocity-time graph and Negative Areas handles the part below the axis, and Approximating with Rectangles estimates the area under a curve. Those few levels are the whole of what these topics offer a GCSE student: GCSE examines no calculus and no logarithms, so take what you came for and stop.
The statement-by-statement version of all of this is on the GCSE maths coverage page, which lists each DfE content statement beside the Brilliant lessons that teach it.
What will you have to get elsewhere?
Most of classical geometry. Ruler-and-compass constructions, bisectors and loci; circle theorems and the vocabulary they use — chords, tangents, arcs, sectors and segments; the SSS, SAS, ASA and RHS congruence criteria; the properties of the special quadrilaterals; plans and elevations and the faces, edges and vertices of solids; and the sine rule, the cosine rule and the ½ab sin C area formula. That is a substantial share of the geometry papers, and none of it is on Brilliant.
The accuracy and measures strand. Rounding to a given number of decimal places or significant figures, error intervals, upper and lower bounds, estimating to check a calculation, and scale drawings and maps.
A short list of specifics. Rearranging a formula to change the subject; recurring decimals as fractions; solving equations by iteration; drawing conclusions about a population from a sample; and most of the experimental side of probability — frequency trees, and relative frequency settling towards theoretical probability as trials increase — though estimating a probability from past outcomes is now covered, in Simulating Outcomes.
Which topics should you use, and in what order?
Over two years, work down this list. Skip any row you can already do quickly and without notes.
| Topic | What it gets you for GCSE | Start here |
|---|---|---|
| Solving Equations (68 lessons) | The repair point if solving falls apart; everything below assumes it | Combining Like Terms |
| Real-World Algebra (12) | Using and writing formulae, scaling prices, percent of an amount | Using Formulas |
| Percents (21) | Percentage of an amount, increase and decrease, repeated percentage change | Percent Increase |
| Proportional Reasoning (36) | Ratio notation, sharing in a ratio, unit rates, direct and inverse proportion | Setting Up Ratios |
| Linear Equations (68) | Expanding, factorising, solving, inequalities and their solution sets | Combining Terms |
| Linear Relationships (58) | Gradient and intercept, y = mx + c, parallel and perpendicular lines | Change per One |
| Everyday Statistics (36) | Mean, median, mode, range, box plots, outliers, comparing distributions | Means |
| Probability and Chance (31) | Possibility spaces, Venn diagrams, combined and conditional probability | Comparing Likelihoods |
| Coordinate Transformations (60) | Reflection, rotation, translation, enlargement, congruence and similarity | Reflecting Coordinates |
| Quadratics (80) | Factorising, completing the square, the formula, roots and turning points | Multiplying Expressions |
| Exponents and Radicals (83) | Index laws, fractional and negative indices, surds, standard form | The Product Rule for Exponents |
| Visual Algebra (66) | Sequences and the nth term of linear and quadratic sequences | Building Patterns |
| Linear Systems (31) | Simultaneous equations by graphing, substitution and elimination | Graphing Systems of Equations |
| Coordinate Geometry (44) | Pythagoras, distance between points, the equation of a circle, area on a grid | Pythagoras’ Theorem |
| Trigonometric Functions (70) | Sine, cosine, tangent, the exact values, arc length, sine and cosine graphs | Triangles and the Unit Circle |
| Exponential Functions (42) | Growth and decay, compound interest, exponential graphs | Growing |
| Vectors (39) | Column vectors, vector addition and subtraction, scalar multiples | Vectors |
The first ten rows carry most of what both tiers examine, so they make a sensible Year 10 block and the rest suit Year 11. If you are following a scheme of work, ignore the order and open the topic matching whatever your class is covering this week — Brilliant lessons are short and stand alone, so nothing needs finishing front to back. One thing to schedule separately: put geometry revision somewhere Brilliant is not, starting in Year 10 rather than the term before the exam.
What should you use alongside Brilliant?
Past papers from your own board — AQA, Edexcel, OCR or WJEC — with their mark schemes, and the formulae sheet your board provides. Papers are where you practise what Brilliant cannot give you: a full set of papers in sequence, one of them non-calculator, questions worded the way your board words them, and method marks that go missing on work that is right but badly presented. Sit a paper, read the mark scheme beside your own answer, group the losses by topic, then open only the lessons that match.
Is Brilliant a complete GCSE maths course?
No. Brilliant is not affiliated with any exam board or with the DfE, it has no past papers, no timed papers and no mark schemes, and it does not cover the geometry listed above. It is the understanding layer — where you go when a topic did not land in class. Your board’s papers and specification are the exam layer, and you need both.
How this mapping was made
Brilliant’s curriculum team maps each skill to the content statement it fits most closely, using the DfE’s subject content for GCSE Mathematics as the authority on what each statement requires. The data was pulled on November 3, 2026 against the live topic catalogue.
Frequently asked questions
I am on Foundation tier. Is any of this too advanced?
Some of it goes past what your papers ask, but not in the places you would expect, so do not sort by difficulty. Use your board’s specification, which marks Higher content, to choose which lessons inside a topic to open.
I am resitting. Where should I start?
With a past paper, not with a topic. Mark it, group the losses by subject area, and open only the matching lessons — resits usually turn on a handful of weak spots rather than the whole specification.
Does Brilliant go beyond GCSE?
Yes. Equations and Curves, Polynomials, Complex Numbers, Polar Coordinate Plane and the newest three, Limits, Derivatives and Integrals, sit past GCSE and are better suited to A-level study.
Related resources
- GCSE maths coverage: topic-by-topic Brilliant lesson mapping
- Does Brilliant cover Geometry?
- Does Brilliant cover Algebra 1?
- What math does Brilliant cover?
- Explore Brilliant’s topics
Sources
[1] Department for Education, Mathematics: GCSE subject content and assessment objectives, for the six content areas and the Foundation and Higher tier structure.
[2] Brilliant, standards alignment database, pulled on November 3, 2026.
[3] Brilliant, “GCSE maths coverage: topic-by-topic Brilliant lesson mapping”.
[4] Brilliant, “Topics”.
