Fascinating tasks in mathematics. Grade 6-9

The book includes a large number of standard, non -standard and research tasks in mathematics of various levels of complexity from the course of mathematics of secondary schools and areas close to mathematics - logic and combinatorics: tasks with integers and fractions, geometric shapes, text tasks, puzzles and puzzles, numerical sequences, numerical sequences, numerical sequences, numerical sequences, numerical sequences, numerical sequences, numerical sequences, numerical sequences Ancient mathematical tasks and tasks-jokes.
The book is intended for students of grades 6-9, can serve as a manual to prepare for mathematical olympiads. It will also be useful to teachers of mathematics, students of pedagogical universities and all interested reader