This manual is intended to assist the teacher in teaching mathematics in the textbook "Mathematics-10. The level of the standard ", written by the authors of this book. The manual consists of six sections. The first section considers the scientific and methodological principles of teaching mathematics in high school, describes the features of the textbook, gives advice on the organization of the educational process. Each of the next four sections is devoted to the relevant topic of the mathematics course. The last section is devoted to the final assessment of academic achievements of tenth-graders in mathematics. The manual can be used by teachers who work on this textbook, as well as other textbooks.