This teacher file is part of a Key Stage 3 maths course offering extensive support to pupils and teachers, and intended for pupils of all abilities and backgrounds. There are teacher files for each of the three Year 9 pupils' books, and a question bank for the whole of Year 9. Each chapter has an introductory page in the teacher file which includes an overview of the material, a map through the chapter to outline the sections for use as a quick reference, planning notes, and coverage of the Programme of Study.