Object-Oriented Modeling in a Rand Model Designer 7. Tutorial and practical manual" by Y. B. Kolesova is a unique and valuable resource for everyone who seeks to understand the principles of object-oriented modeling and master one of the most popular development environments Rand Model Designer 7 .. This manual will be an indispensable assistant for both students studying programming and modeling, and for practitioners who want to expand their knowledge and skills in this area. The book covers a wide range of topics related to the object-oriented approach, ranging from basic concepts to complex concepts that will help the reader not only to master the theory, but also to apply it in practice. Yu. B. Wheels in an accessible and understandable form explains how to use the capabilities of the Rand Model Designer 7 to create effective models, which makes the learning process exciting and productive. Readers interested in programming, systems analysis, software development, and information systems will find many useful tips and practical examples in this book. The manual will be especially useful for technical students, graduate students and young professionals who want to deepen their knowledge in the field of modeling and development of software solutions. It can also be interesting for teachers who are looking for quality materials for their courses. One of the key themes of the book is object-oriented modeling, which has become the basis for the development of many modern software solutions. Wheels focuses on the principles of encapsulation, inheritance, and polymorphism, explaining how these concepts help create more flexible and scalable systems. Particular attention is paid to the practical aspects of working in Rand Model Designer 7, which allows the reader not only to theoretically master the material, but also to immediately apply it in practice. The author's style is distinguished by clarity and logical presentation, which makes complex topics accessible for understanding. Yu. B. Wheels not only shares their knowledge, but also inspires the reader to further study and experiments in the field of object-oriented modeling. His experience and practical recommendations will help to avoid common mistakes and speed up the learning process. The book "Object-oriented modeling in the environment of Rand Model Designer 7" is not just a textbook, but a whole guide to the world of modern programming and modeling. It will be a great addition to the library of anyone who wants to be one step ahead in their professional activities. If you are looking for materials on object-oriented programming, modeling in software, or just want to improve your skills in Rand Model Designer, this guide will become your reliable companion. Do not miss the opportunity to immerse yourself in the fascinating world of object-oriented modeling and discover new horizons in software development with Yu. B. Wheels!