Choosing a mathematical model

Use differences, ratios and context to justify whether a linear, quadratic or exponential model best fits a situation, then use it to predict.

⏱ 20 min❓ 10 questions

What you'll be able to do

✔I can use first differences, second differences and ratios to identify linear, quadratic and exponential data
✔I can justify a choice of model using the context of a problem
✔I can use a model to make a prediction and comment on its reliability

How this works

1Read the short explanations first — they teach you what you need before each question.
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.
3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

10 questions and 1 quick teaching card, including:

🔘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.

Curriculum: AC9M10A04