Как построить пример?

The ninth book of the series "School Mathematical Mugs" is designed to teach students in grades 5-7 to build mathematical examples and designs. The book includes the development of five classes of a mathematical circle with detailed examples of various complexity, tasks for independent solution and methodological instructions for the teacher.
For the convenience of using leaflets of classes, repeated at the end of the book in the form of handout. Another 50 tasks with brief solutions are given an additional list. The book is addressed to school teachers of mathematics and leaders of mathematical circles. We hope that she will be interesting to schoolchildren and their parents, students of pedagogical universities, as well as all lovers of elementary mathematics.
4th edition, stereotypical