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Choosing Materials by Testing

Which material is strongest? Run a fair test to choose the best one for a job.

15 min6 questions

What you'll be able to do

  • I can test materials to compare them
  • I know a fair test changes only one thing
  • I can choose a material based on test results

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

6 questions and 1 quick teaching card, including:

  • 🔘Multiple choiceTap the answer you think is best, then check it.
  • ⚖️True or falseRead the statement and decide if it's true or false.

👪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.

Sign in and subscribe to unlock the full lesson and save your progress.

Curriculum: AC9TDE4K01, AC9TDE4P02