Free Year 9 Maths practice — reason with positive, fractional and negative scale factors. No account needed.
Apply signed scale factors about stated centres and distinguish length, position and area effects. The default practice mode is untimed, so the learner can think before choosing. Correct answers build a gentle celebration; mistakes receive corrective feedback and return later rather than causing a penalty spiral.
Learning objective: Track directed distances through a centre and preserve similarity while using positive, fractional and negative factors.
Curriculum anchor: England KS3 Mathematics: transformations; enlargements with positive, fractional and negative scale factors; similarity.
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 where the centre is, whether the image stays on the same ray and which measures scale by the factor or its square. Stop while attention is still good. A short accurate return tomorrow is more useful than extending a tired session today.
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? Practice is untimed. Where a sprint exists it is optional. Times Tables Sprint also includes MTC-style independent practice, not an expected-standard judgement.
Can it be used on a phone? Yes. Buttons support touch and keyboard use; sorting always has a tap alternative to dragging.
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