Free Year 9 Maths practice — calculate tree paths and without-replacement probabilities. No account needed.
Multiply along probability-tree paths, add disjoint outcomes and update branches after draws without replacement. Correct answers can trigger celebrations. Feedback and retry options depend on the game.
Learning objective: Distinguish path intersections from alternative outcomes and keep changing sample spaces explicit.
Curriculum anchor: England KS3 Mathematics: theoretical probability; mutually exclusive outcomes; combined events; probability trees; sampling without replacement.
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 whether to multiply or add, whether the first event changes the second branch and whether all end paths total one. 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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