The book "Opportunities of the educational field "Mathematics and Informatics" for the implementation of a competence approach in school and university" is a unique publication created by a team of authors, which opens new horizons in the teaching of mathematics and computer science. This work will become an indispensable tool for teachers, students and anyone interested in modern teaching methods and the development of educational practices. The book focuses on the competence approach - a methodology that focuses on the formation of students not only knowledge, but also the skills necessary for a successful life in modern society. The authors consider in detail how the educational field "Mathematics and Informatics" can become the basis for the development of key competencies in schoolchildren and students. They analyze how the integration of these disciplines contributes to the formation of critical thinking, problem-solving ability and creativity. The book will be of particular interest to teachers working in schools and universities, as well as methodologists and administrators of educational institutions. It is suitable for readers of all ages, from students of pedagogical universities to experienced teachers seeking to update their knowledge and approaches to learning. It will find useful information and parents who want to understand how modern teaching methods can help their children in the future. The authors raise important topics such as the need to adapt curricula to the demands of the times, the use of information technology in teaching, and the role of an interdisciplinary approach in education. They offer practical recommendations for the implementation of a competency-based approach in the learning process, focusing on examples from real practice. This allows the reader not only to realize the theoretical significance of the proposed ideas, but also to see their practical applicability. The style of the authors is clear and accessible, which makes the book easy to understand. They use many examples from life, which allows the reader to better understand how to implement the proposed ideas in their educational context. In addition, the book features interactive elements, such as tasks and self-checking questions, which makes the reading process more fun and engaging. This work is an important contribution to modern pedagogical literature and can become a reference book for anyone committed to innovation in education. Readers interested in such works as Modern Approaches to Teaching Mathematics or Computer Science in the 21st Century will find this book a lot of useful and inspiring. Thus, “Opportunities of the educational field “Mathematics and Informatics” for the implementation of a competence approach in school and university” is not just a book, but a whole tool for transforming the educational process .. It is designed to inspire teachers to new achievements and help them in creating a more effective and relevant educational environment. Do not miss the opportunity to immerse yourself in the world of modern educational practices and discover new opportunities for the development of both your students and yourself.