The book "Principles of Economic Theory for Grade 12" has a dual purpose:

For students, its purpose is to contribute to the complete understanding and mastery of the subject matter (basic and other economic concepts) covered in the first three chapters of the course.

For teachers, it aims to become an effective tool that will support their significant teaching work.

This volume presents the first three chapters of the school book's curriculum.
Each chapter is divided into sections, each of which includes:
- Key points of theory
- Solved applications
- Exercises
- Multiple-choice questions
- True-false questions
- Theory questions based on the school book

At the end of each chapter, there are also assessment criteria, while at the end of the book, the solutions to the exercises, the answers to the multiple-choice, true-false, and theory questions, as well as the assessment criteria, are provided.