Exam-style question
Try this first
Which response best matches the A-level Maths objective on use sequences and series in modelling?.
- A.D6: choose the method that matches Use sequences and series in modelling
- B.Use any familiar GCSE calculation even if it ignores Use sequences and series in modelling
- C.Write only the final answer without showing the mathematical method
- D.Change the notation or restrictions to make the algebra look simpler
Model answer
What a good answer should say
- The correct answer is D6: choose the method that matches Use sequences and series in modelling.
- This option is best because identify the term rule, common difference or common ratio before summing, then checks that the notation, restrictions and conclusion match the AQA A-level Mathematics objective.
This answer is tied to the objective: D6 Use sequences and series in modelling..
Explanation
Why this works
Use the explanation to connect the worked answer back to D6 Use sequences and series in modelling..
D6: choose the method that matches Use sequences and series in modelling is the correct option. It directly supports use sequences and series in modelling by requiring the student to identify the term rule, common difference or common ratio before summing.
The other options are weaker because they hide the reasoning, ignore restrictions, or use a generic calculation that may not fit the objective.
Maths method check
- Topic focus: Pure Mathematics.
- Question style: practice.
- Reasoning demand: recall.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.