In the kingdom of ingenuity. Book 2. Ignatiev E.I.

Why don't children like mathematics? Because it is boring and complex, and in practice you can’t apply it. But what if all this is not so? To convince the child that mathematics is fun and useful, you can with the help of this book. It contains the best mathematical tasks for quick wit and attentiveness. Puzzles, geometric tricks with figures, unusual games with matches, arithmetic paradoxes, algebraic sophisms and labyrinths. The child even learns how to prove the Pythagoras theorem with the help of dominoes! And if some task does not lend itself, you can always look into a detailed description of the solution. The book helps to develop logic and ingenuity and really love and understand mathematics. So, to receive the best grades on the subject and, perhaps, even win complex school Olympiads.