Choosing between IB Maths Analysis & Approaches (AA) and Applications & Interpretation (AI) — and then HL or SL — is one of the most consequential subject decisions IB students make. Here's a practical guide.
AA vs AI — Core Differences
| Aspect | Analysis & Approaches (AA) | Applications & Interpretation (AI) |
|---|---|---|
| Focus | Algebra, calculus, proof | Statistics, modelling, technology |
| Calculator use | Moderate | Heavy reliance on GDC |
| Best suited for | Maths, Engineering, Physical Sciences | Business, Social Sciences, Life Sciences |
| Style | Abstract, proof-based | Applied, real-world contexts |
Which Should You Choose?
Choose AA if:
- You're considering Maths, Engineering, Physics, Computer Science or similar STEM degrees
- You enjoy abstract problem solving and algebraic manipulation
- You're comfortable with proof and formal mathematical reasoning
Choose AI if:
- You're considering Business, Economics, Psychology, Biology or Social Sciences
- You prefer applied, real-world problem solving over abstract theory
- You're comfortable using technology (GDC, software) as a core problem-solving tool
HL or SL?
This decision should be based on both your strength in maths and your intended degree's requirements. Many competitive STEM degree programmes require or strongly prefer Maths AA HL specifically. If you're unsure of your degree path, it's worth checking target university requirements early, since switching between HL and SL — or AA and AI — after IB1 becomes increasingly difficult.
A Common Misconception
AI is sometimes perceived as the "easier" option, but this isn't accurate — it simply tests different skills. Students who struggle with abstract algebra but excel at statistical interpretation and applied problem solving may find AI considerably more suited to their strengths, regardless of overall mathematical ability.