The Additional Higher Level syllabus of Analysis & Approaches, taught code by code — every lesson is one official AHL subtopic (AHL 1.10, AHL 1.11, …), pitched at genuine HL depth: proof by induction and contradiction, complex numbers to De Moivre and roots, and worked examples marked the way HL examiners mark — method, accuracy, and reasoning.
HL = SL + these extension codes. The shared foundation is the complete SL course — an HL student works both. English-only, like the real exam. Topics open in syllabus order.