Free Year 9 Science practice — decay, biodiversity, pollution and plant minerals. No account needed.
Connect decomposition and nutrient recycling, interpret pollution and biodiversity evidence, and explain selected plant mineral needs. 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: Use mechanisms and evidence to connect environmental conditions, decomposers, biodiversity and plant mineral nutrition.
Curriculum anchor: England KS3 Science: relationships in ecosystems, material cycles, biodiversity, plant nutrition and the effects of environmental change.
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 the learner to trace where matter moves, name the limiting factor, and distinguish measured evidence from a guaranteed outcome. 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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