The book "Design, development and methodology of using electronic training courses in mathematics" under the authorship of a team of authors, including T. In. Zykov is a unique and relevant publication that is aimed at teachers, methodologists and anyone interested in modern approaches to teaching mathematics. With the rapid development of technology and the transition to distance learning, this book becomes an indispensable resource for those who want to effectively use electronic training courses in their practice. The book focuses on the process of designing and developing e-courses, which is an important part of the modern educational process. The authors share their experience and knowledge, offering readers not only theoretical foundations, but also practical recommendations for creating courses that will be interesting and useful for students. The book covers a wide range of issues: from the choice of a platform for the placement of the course to the methodology for assessing its effectiveness. This makes it a valuable tool for educators seeking to innovate in learning. Who can like this book? First of all, it will be of interest to mathematics teachers who want to introduce modern technologies into their work. It will also be appreciated by students of pedagogical universities studying teaching methods, as well as methodologists engaged in the development of educational materials. The age category of readers varies from 18 to 60 years, as the book is suitable for both beginners and experienced professionals who want to update their knowledge. Topics raised in the book range from course design basics to analysis of their impact on the learning process. The authors emphasize the importance of individualization of learning, which is especially important in the context of student diversity and their needs. The book emphasizes that e-courses can not only facilitate the learning process, but also make it more exciting and interactive. This is especially important for mathematics, which is often perceived as a complex and boring subject. The style of the authors is characterized by accessibility and clarity of presentation, which allows the reader to easily absorb information and apply it in practice. The book is filled with examples, illustrations and practical tasks, which makes it not only a theoretical manual, but also a practical tool for implementing ideas in a real educational environment. In addition, the team of authors includes specialists with extensive experience in the field of pedagogy and information technology, which gives the book additional value. This allows readers to be confident in the quality of the information presented and its relevance. If you are looking for books on teaching methods, electronic educational technologies or just want to improve your skills in mathematics, then “Design, development and use of electronic training courses in mathematics” will be a real find for you. It will not only expand your horizons, but also inspire new ideas and approaches to learning. Thus, this edition is not just a book, but a whole guide to the world of modern educational technologies, which will help you become a more effective and creative teacher. Do not miss the opportunity to get acquainted with this important work and take a step towards the future of education!