Free Year 9 Maths practice — calculate sector areas, angles and radii. No account needed.
Use fractions of a full circle to find selected sector areas, central angles and radii. Correct answers can trigger celebrations. Feedback and retry options depend on the game.
Learning objective: Connect a central angle with the same fraction of 360 degrees and of the full circle area.
Curriculum anchor: England KS3 Mathematics: derive and apply formulae; calculate areas of circles and sectors.
This game is designed as short independent practice after an idea has been introduced. It does not replace direct teaching, mathematical or scientific discussion, or an adult checking whether the learner can explain the idea away from the screen.
Ask for the sector fraction first, then check the radius rather than diameter is squared and keep π exact where requested. Take a break when you need one.
Does it need an account? No. The game runs in the browser and asks for no name, email address, school or location.
Is it timed? Timing varies by activity. Check the available modes and instructions before starting.
Can it be used on a phone? Controls vary by game. Use the on-screen buttons or read the instructions for keyboard and drag actions.
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