Mathematics for the International Student: Mathematics SL has been written to embrace the syllabus for the two-year Mathematics SL Course, first examined in 2014. In this third edition, chapters are arranged to follow the same order as the chapters in our Mathematics HL (Core) third edition, making it easier for teachers who have combined classes of SL and HL students. Syllabus references are given at the beginning of each chapter. The new edition reflects the new Mathematics SL syllabus. More lower level questions have been added at the start of the exercises, to make them more suitable for a range of ability levels. Discussion topics for the Theory of Knowledge have been included in this edition. In response to the introduction of a calculator-free examination paper, a large number of questions have been added and categorised as 'calculator' or 'non-calculator'. In particular, the final chapter contains over 160 examination-style questions to help students prepare for examinations. This product has been developed independently from and is not endorsed by the International Baccalaureate Organization. International Baccalaureate, Baccalaureát International, Bachillerato Internacional and IB are registered trademarks owned by the International Baccalaureate Organization.