Free Year 8 Science practice — calculate energy use, cost, power and work, then compare resource evidence. No account needed.
Calculate power, joules, kilowatt-hours, stated energy costs and mechanical work, then compare bounded resource evidence. 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: Choose consistent units and equations for energy calculations and keep cost and resource conclusions within the stated scenario.
Curriculum anchor: England KS3 Science: energy changes and transfers; work done; power; fuel use and costs; energy resources.
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 write the equation and units first, then identify any tariff or operating assumption. 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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