IB DP Mathematics: Applications and Interpretation (AI) is designed for students who enjoy seeing mathematics used in real-world contexts. It emphasises statistics, modelling, and the use of technology (GDC) as a tool.
SL (150 hours) and HL (240 hours) both cover 5 topics. Assessment: Paper 1 (short questions, technology allowed), Paper 2 (extended problems, technology allowed), Paper 3 (HL only — modelling). IA: mathematical exploration (20%). Technology: GDC (graphing display calculator) is used throughout and in exams.
Modelling: linear, quadratic, exponential, sinusoidal models — fitting data, making predictions. Statistics: descriptive statistics, regression, chi-squared test for independence, normal distribution, t-tests (HL). Probability: Bayes' theorem, conditional probability, distributions. HL adds: graph theory, Voronoi diagrams, differential equations, kinematics.
AI maths uses contexts like: modelling virus spread, optimising delivery routes (graph theory), predicting exam scores (regression), testing if a coin is fair (hypothesis testing), and modelling tides (sinusoidal functions). Students use spreadsheets, GDC, and statistical software.
AI SL is generally considered more accessible than AA SL for students less confident in pure maths, as it focuses on applying known techniques with technology rather than algebraic manipulation and proof. However, AI HL is very challenging — it covers advanced statistics, graph theory, and modelling. Neither course is inherently "easier" — they test different skills.
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