Difficulty Verdict
The October/November 2024 series offered a highly balanced progression of difficulty. The Core papers (Paper 12 and Paper 32) were very accessible, testing standard calculations, basic algebraic formulas, and everyday geometry. The Extended papers (Paper 22 and Paper 42) introduced a steeper gradient of challenge, moving from simple algebraic manipulation to intricate multi-step trigonometry, advanced circle theorems, and differentiation.
Where the Marks Are
High concentrations of marks are located in the algebra and functional graph questions. In Paper 42, graphing functions and solving associated intersection equations yielded considerable marks. Furthermore, multi-step trigonometry (comprising sine and cosine rules, bearings, and shortest distances) represented a significant chunk of the total marks, rewarding systematic method applications and accuracy in intermediate working.
Examiner Pitfalls
- Truncating Intermediate Values: Many candidates rounded values to 2 decimal places mid-calculation, leading to inaccuracies in the final 3 significant figures.
- Neglecting Necessary Steps in Non-Calculator Questions: Students who jumped straight to answers in mixed number operations without documenting improper fraction conversions lost method marks.
- Forgetting Linear vs. Area/Volume scale factors: In similarity questions, applying linear ratios instead of squaring or cubing them for area and volume calculations was a recurring mistake.
Strategy and Recommendations
Candidates should focus on displaying full working for algebraic equations, especially when using the quadratic formula or equating coefficients in simultaneous equations. For graphing questions, ensuring that curves are drawn with a single smooth freehand line rather than jagged segments will secure final accuracy marks. Lastly, always keep construction arcs visible in geometry and scale drawings, as they are essential for scoring the method component.