O Level · IGCSE · AS & A Level

Every topic on your syllabus, made clear.

Free, visual lessons in Maths, Physics, Chemistry and Biology for every topic on your Cambridge, Edexcel or AQA syllabus, with worked examples, a trick worth remembering, and real past paper questions on each topic.

Choose your course Past papers

Lessons: 550
Practice questions: 6,854
Past paper questions: 1,066

y = (x − 1)² − 2a = 1

Drag the slider. Every lesson has a graph like this to play with.

Step one

Choose your course

Pick a subject, then your syllabus code, to see every topic as a short lesson in your board's own order.

Mathematics. Algebra to calculus, mechanics and statistics.

O Level, IGCSE and GCSE

4024O Level MathematicsCambridge · 45 lessons 4MA1International GCSE Mathematics AEdexcel · 45 lessons 8300GCSE MathematicsAQA · 45 lessons

AS and A Level

9709AS & A Level MathematicsCambridge · 129 lessons 9231AS & A Level Further MathematicsCambridge · 32 lessons YMA01International A Level MathematicsEdexcel · 150 lessons 9MA0A Level MathematicsEdexcel · 109 lessons 9FM0A Level Further MathematicsEdexcel · 86 lessons YFM01International A Level Further MathematicsEdexcel · 25 lessons 7357A-level MathematicsAQA · 101 lessons 7367A-level Further MathematicsAQA · 63 lessons

Not sure which code is yours? Find it by board, level and subject

Step 1

Exam board

Step 2

Level

Step 3

Subject

Step 4

Specification

Selected

Cambridge International 9709 — AS & A Level Mathematics

Open course

Past papersReal exam questions by topic, or full papers by year, with mark schemes.Practice questions6,854 exam-style questions, marked instantly with hints.Exam infoSyllabuses, formula booklets, exam rules and key dates.Graphing calculatorPlot functions, sliders and data, free in your browser.

HistoryMaths

Around 820 AD, al-Khwarizmi solved quadratics by completing a square of tiles. His book gave us the word "algebra"; his name gave us "algorithm".

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Try one now

A right-angled triangle has shorter sides 3 cm and 4 cm. How long is the hypotenuse?

Wrong answers get feedback on the exact slip, just like on every practice question.

Exam practice

Past papers

All past papers

Topical: every question on one topic together, to drill a weak area. Yearly: complete papers for timed practice. Highlighted codes already have questions sorted by topic.

Mathematics9709 9231 4024 YMA01 9MA0 YFM01 4MA1 7357

Physics5054 0625 9702

Chemistry5070 0620 4CH1 9701 YCH11 7405

Biology5090 0610 4BI1 9700 YBI11 7402

How a lesson flows

Fourteen steps, from first idea to real exam question

Every subtopic follows the same path, so you always know where you are and what comes next.

Learning objectives
Core idea
Key formulae
Worked examples
Explore the graph
Common mistakes
Exam tip
Guided practice
Practice questions
Challenge
Summary
Quick quiz
Same topic, different board
Past paper questions

Specification-first

Mapped to your syllabus

Every lesson and question records its board, paper and topic. Switch board and the same idea appears in that board's structure, with your progress kept.

Checked properly

Equivalent answers accepted

−37/4, −9.25 and 2±√5 are marked mathematically, not by matching text. Wrong answers are matched against common errors and the slip is named.

Your mistakes

An error book that learns

Every mistake is logged with its cause. Mastery is tracked per skill, and targeted practice starts with your weakest one.

Save your progress for free

Track every topic, keep an error book and pick up where you left off on any device.

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