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The textbook is compiled in accordance with the standard educational programme created by a team of authors under the leadership of R. B. Shian.

The textbook consists of four sections: 1) Counting. Signs of objects. Spatial relations; 2) Numbering of numbers from 1 to 10; 3) Problems. Adding and subtracting numbers within 10; 4) Numbers 11—100. Although such a structure may seem traditional, the systematic differentiated approach and practical orientation of the tasks contributes to the development of key mathematical competencies offered by the standard programme.

The use of the textbook in mathematics lessons will encourage both teachers and first-graders to use the principles of partnership pedagogy, because teamwork, joint tasks, discussion of logical tasks and, as a result, independent fulfilment of the main task of the lesson by each student without exception will contribute to creating an atmosphere of success in the classroom.

The authors paid special attention to the development of students' financial literacy. Therefore, many of the exercises and tasks are aimed at calculating the cost of a purchase, predicting a purchase, etc. Thanks to the powerful development of the topic «Day. Hour - a unit of time measurement", students will learn not only to navigate by the clock, but also to apply the knowledge gained in practice: to determine the duration of the institution (hospital, store); to plan their day, etc.