“Mathematics at Every Step” is a fascinating and informative work written by the outstanding Russian mathematician Yakov Isaakovich Perelman .. This book, published at the beginning of the 20th century, is still relevant and interesting for a wide audience who wants to understand how mathematics permeates our daily lives. Perelman, known for his vivid and accessible explanations of complex mathematical concepts, offers readers a unique look at how mathematics is not just a science, but also an important tool for understanding the world around them. The book covers a variety of topics, ranging from simple arithmetic operations to more complex concepts such as geometry and probability theory. Perelman uses examples from everyday life to show how mathematical principles work in real-life situations. Readers will be able to see how mathematics is applied in areas such as architecture, engineering, economics, and even the arts. This makes the book especially attractive for those who want not only to study mathematics, but also to see its practical application. “Mathematics at every turn” will be interesting for both schoolchildren and students, as well as adults who have long left educational institutions, but want to refresh their knowledge. If you have ever thought about how to solve everyday problems with the help of mathematics, or just want to expand your horizons, this book will be a real find for you. It is suitable both for those who are just beginning to get acquainted with mathematics, and for those who already have some experience, but want to deepen their knowledge. One of the key themes of the book is the accessibility of mathematics. Perelman seeks to destroy the myth that mathematics is a complex and inaccessible science, intended only for the select few. It shows that mathematical ideas can be understood and interesting to everyone. Readers will be able to learn about how mathematics helps in decision-making, in data analysis, and in solving the problems we face every day. This makes the book not only educational, but also inspiring. Perelman's style is simple and clear. It uses a lively and fascinating language, which allows the reader to easily perceive even the most complex ideas. Its examples and illustrations make the material more accessible and understandable. Perelman is also known for his other works, such as Physics for All and Entertaining Mathematics, which also deserve attention and will help readers to understand the world of science more deeply. “Mathematics at Every Step” is not just a textbook, but a real encyclopedia of mathematical ideas that surround us everywhere. It inspires learning and opens our eyes to how mathematics can enrich our lives. If you are looking for a book that will help you see the world from a new angle and teach you how to use mathematics in everyday life, this work will become your faithful companion. In conclusion, “Mathematics at Every Step” is a must-read for anyone who wants to understand how mathematics affects our lives. This book will be a great gift for students, teachers, as well as for all science lovers. Do not miss the opportunity to immerse yourself in the world of mathematics and discover its amazing possibilities!