The Learners' Alley library: notes, slides and problem sets to build up to olympiad level.
One set of notes per chapter, in teaching order: each chapter uses only what the chapters before it teach. Open a chapter on screen, or download it as a PDF (↓), in colour or in black and white for printing.
Click or press → to step through. M opens the section menu, F goes full screen.
Two sets per chapter, printed in black and white. Set A, Concept Practice, builds up from the lesson. Set B, Competition Practice, is timed at competition pace. Each set has an answer key, a Check page for marking and review slides. The papers and keys download as PDFs (↓).