Overview
Choosing between IB Maths Analysis & Approaches and Applications & Interpretation shapes your whole diploma — and university options. Here is an honest comparison of skills, papers, and who each course suits.
Understanding the IB Mathematics assessment
For the IB Diploma Programme, maths AA emphasises algebra, calculus, proof, and theoretical understanding — Paper 1 is non-calculator at HL/SL. Maths AI emphasises modelling, statistics, and technology — both papers use GDC extensively; HL adds Paper 3 problem-solving.
Markbands and what examiners reward
For the IB Diploma Programme, aA rewards algebraic elegance and rigorous communication; AI rewards contextual interpretation and valid modelling assumptions.
A past paper workflow that actually works
For the IB Diploma Programme, choose AA if you enjoy calculus proofs and plan STEM with heavy maths. Choose AI if you thrive on data, finance models, and real-world contexts — or your degree only requires "maths" broadly.
Paper-specific tips
For the IB Diploma Programme, check university pages early — engineering often prefers AA HL; some economics courses accept AI HL. Do not choose based on rumours alone.
Common pitfalls
For the IB Diploma Programme, picking AI to avoid calculus then hitting degree requirements for AA; switching courses too late; ignoring IA differences.
Using MarkScheme across the diploma
MarkScheme hosts [760+ free IB lessons](/ib/courses) across sciences, humanities, languages, maths, arts, and Core — each syllabus point links to [topic practice](/ib/past-papers/biology-hl#ib-topic-practice) and [criterion marking](/mark). See the [free courses guide](/blog/ib-free-courses-guide) and [diploma past papers guide](/blog/ib-diploma-past-papers-guide).
Frequently asked questions
This section covers Frequently asked questions — what IB examiners reward most often in past papers and coursework.
Which is harder?
Neither is universally harder — AA stresses abstract maths; AI stresses interpretation under time pressure.
Can I switch mid-course?
School-dependent — switching after Year 1 is often disruptive. Decide in consultation with your teacher.
Past papers for both?
Maths AA and Maths AI archives on MarkScheme — try one paper of each before committing.