Analysis and Approaches (AA) emphasises algebraic rigour, proof, and abstract reasoning. Questions often require exact answers, manipulation of expressions, and clear logical steps. You will encounter more non-calculator work, especially at Higher Level, where calculus, sequences, and complex numbers appear in forms that demand analytical solutions. The wording tends to be concise and mathematical, with command terms such as 'show that', 'prove', and 'determine'.
Applications and Interpretation (AI) focuses on modelling, statistics, and the use of technology to solve real-world problems. Questions frequently present data sets, diagrams, or contextual scenarios where you must choose appropriate tools, interpret output, and communicate conclusions. Calculator use is expected throughout, and command terms like 'comment on', 'interpret', and 'predict' appear regularly. The style rewards critical thinking about the suitability and limitations of mathematical models.
Both courses share the five syllabus topics — Number and Algebra, Functions, Geometry and Trigonometry, Statistics and Probability, Calculus — but the depth and emphasis differ. AA HL goes further into proof and complex numbers, while AI HL extends into advanced statistics and differential equations. Recognising these distinctions helps you select practice materials that match your course and level, avoiding time spent on irrelevant question types.