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The textbook consists of four sections containing 27 paragraphs, each of which contains a sufficient number of differentiated exercises. After each section, the corrections for repetition are given. To prepare for the control work it is planned "Homework" and "Assignment for checking knowledge". At the beginning of the textbook there are the exercises of increased complexity, subject indicator and answers to most of the exercises. For those who find it difficult there is a low number of interesting and difficult tasks in the section "Interesting tasks for pupils with difficulties".