Quest trainer for oral counting. Addition and subtraction. Grades 1-4

You hold an amazing book in your hands: there is everything in it: mathematical games, labyrinths, magic squares, crosswords, encryptions, arithmetic tricks ... No, this is not a textbook, but an exciting journey to the country of arithmetic, which is never boring! An oral account that we suggest to study you will retain the flexibility of the child’s mind. And, knowing the secrets of the oral account, he learns to observe, compare, draw conclusions. The knowledge gained by the person himself as a result of the discovery remain in the active arsenal, and do not lie dead cargo in the backyard of consciousness! So there is enough extreme in the book, and thanks to him the child will learn to calculate his strength, he wants to take a chance. And he will feel how interesting it is