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Variables in Experiments

Learn to spot the variable you change, the one you measure and the ones you keep the same in a fair test.

⏱ 17 min❓ 7 questions

What you'll be able to do

  • ✔I can name the variable I change and the variable I measure
  • ✔I know all other variables must be kept the same
  • ✔I can plan a fair test step by step

How this works

  1. 1Read the short explanations first — they teach you what you need before each question.
  2. 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
  3. 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

7 questions and 1 quick teaching card, including:

  • 🔢Number answer — Work out the answer and type the number.
  • 🔘Multiple choice — Tap the answer you think is best, then check it.

👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.

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Curriculum: AC9S5I01