Cells and tables. Issue 26

The twenty-sixth book in the series "School Mathematical Circles" is dedicated to problems involving cells and tables. Their difficulty ranges from very simple to the most challenging.

It includes the development of nine math circle sessions with detailed examples of varying difficulty, problems for independent solving, and methodological instructions for the teacher. All problems are provided with detailed solutions. The book covers problems related to counting the same quantity in two different ways, equations in integers, alternation and chess coloring, parity and divisibility, and area highlighting.

A significant part of the book consists of additional problems with solutions and comments. For ease of use, the final part of the book, as always, is presented in the form of handout materials.

The book is aimed at school math teachers and leaders of math circles. We hope that it will be interesting to schoolchildren and their parents, students of pedagogical universities, as well as all math enthusiasts.