"Practices in Elementary Mathematics .". Algebra. Trigonometry by B. N. Litvinenko and A. G. Mordkovich is an indispensable educational resource for students of physical and mathematical specialties of pedagogical institutes . This manual not only covers the main topics of algebra and trigonometry, but also focuses on the practical application of mathematical knowledge, which makes it especially valuable for future educators and researchers. The book focuses on the key aspects of elementary mathematics that are necessary to successfully master more complex mathematical concepts. The authors have carefully worked out the material to make it accessible and understandable, even to those who are faced with mathematics for the first time. Each section includes theoretical foundations, examples of problem solving and practical exercises, which allows readers not only to learn the theory, but also to apply it in practice. The book will be of interest to students who seek to deepen their knowledge in the field of mathematics, as well as to those who are preparing for exams or olympiads. It is suitable both for self-study and for use in the educational process. Students interested in mathematics, physics, engineering and other exact sciences will find in this manual a lot of useful materials that will help them in their studies and scientific activities. The topics covered in "Practice in Elementary Mathematics" cover a wide range of topics, from the basics of algebra, such as equations and inequalities, to more complex concepts of trigonometry, including functions, graphs and their applications. The authors emphasize the importance of understanding these topics for further study of higher mathematics, which makes the book especially relevant for students planning to continue their studies in the magistracy or postgraduate studies .. Litvinenko and Mordkovich's writing style is clear and accessible. They are adept at explaining complex things in simple language, making their manual ideal for students who may have difficulty perceiving mathematical material. In addition, the authors use many examples from real life, which helps readers to see the practical application of the concepts studied. If you are looking for math books that will help you prepare for exams or simply improve your knowledge, "Practices in Elementary Mathematics. Algebra. Trigonometry will be a great choice. This manual can be compared with other well-known textbooks, such as Elementary Mathematics and Mathematical Analysis, but it stands out for its practical approach and focus on problem solving. Do not miss the opportunity to immerse yourself in the world of elementary mathematics with this unique manual "Practices in Elementary Mathematics .". Algebra. Trigonometry is your reliable companion in the study of mathematics, which will help you not only to master the necessary knowledge, but also to develop analytical thinking, which is an important skill in any profession.