Maths and Science Exam Technique

Maths and science exams have their own specific techniques that differ from essay-based subjects. The stakes are particularly high because these papers often have the most structured mark schemes — meaning there is a clear, predictable way to earn (or lose) marks on every question.

The core principle is this: method matters as much as the final answer. An incorrect final answer with clear, correct working can earn most of the available marks. A correct final answer with no working shown is risky — and on "show that" questions, it earns nothing.

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Show Your Working — Always

This is the single most important rule for maths and science exams. Every year, examiners report that students lose thousands of marks by not showing their working.

Here is why it matters:

Method marks vs answer marks

Most calculation questions split their marks into:

• Method marks (M) — awarded for using the correct approach, even if you make an arithmetic error
• Answer marks (A) — awarded for getting the correct final answer

For example, on a 3-mark calculation question:

• M1: Selecting the correct formula
• M1: Substituting the correct values
• A1: Arriving at the correct answer