Learn it properly. One small step a day.
Get a question wrong and you see the exact slip and why, then try it again with new numbers. The study tools are free, with no sign-up.
Pick a way in
Courses
Short GCSE lessons. A wrong answer shows you the exact slip.
GCSE MathsGCSE ScienceGCSE Computer Science
Code
Learn Python, JavaScript, SQL and C by writing real code.
Revision
Every topic in your specification, with notes, tools and official past papers.
Study tools
A focus timer, flashcards, a planner, calculators and plenty more.
Music
Theory practice, musical terms and tools for composers.
Shop
Printable packs, planners and paper.
Get one wrong on purpose
A real GCSE Maths question. Pick a wrong answer, see what it tells you, then find the right one.
Open the lessonStart at the origin. Move 3 units to the left, then 4 units down. Which point are you at?
Find your level in 10 minutes
Up to 15 questions, 10 minutes at most. At the end you get a place to start in the course.
Courses by level
All courses- A-level MathsComing soon
- A-level SciencesComing soon
- A-level Computer ScienceComing soon
Little and often
Your streak
One lesson, a set of flashcards or a focus block counts for the day. Miss a day and a rest day keeps your streak going, once a week.
Sparks
A Spark opens a helper beside a question: a number line, a calculator, the equation sheet or the periodic table. You get 5 a day, and practice earns more.
Study tools
All tools
A-level Maths Pack
Coding Pack
Planner Deluxe 2026-27Questions
Is Brainlag free?
The study tools and games are free, and so is part of every course. Plus opens the rest.
Do I need an account?
No. The tools work straight away. With an account, your progress, streak and flashcards stay in step on all your devices.
Which exam boards do the courses follow?
Each course page lists the boards it covers, such as AQA, Edexcel or OCR.
Is it in my language?
The site is in English, Spanish, French and German. The courses are in English for now.
What is Plus?
Brainlag's membership: it opens the locked lessons, with no ads. The Plus page shows what each plan includes. See Plus
Study guides
- Active recall: why testing yourself beats rereading
- How to plan an essay, from the question to a finished outline
- Note-taking methods compared: which one fits your class?
- The Pomodoro Technique: how to use it for studying
- How to make a revision timetable you actually stick to
Parent or teacher? How Brainlag works and how games are labelled
Ready when you are.
Start learning