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A child with developed logical thinking stands out from the crowd. They learn easily, find different ways to solve problems, and are able to justify their opinions. And in general, everything around her is interesting and understandable! Let's develop the child's logical thinking together with the DZUM family, who live in the modern world alongside such unusual relatives as: Computer Grandpa, Grandma Flash Drive, Uncle Copter, Aunt Camera and other gadget friends. Little Dzumchik and Dzumochka are 8 and 7 years old respectively, and they are schoolchildren. To facilitate their learning, you need to practice solving logic problems with them! What will we do? And much, much more! Because the DZUM-family assistants have prepared more than 100 different tasks, designed in such a way that the child will develop, in addition to logic, attention, intelligence, perception, memory and even physical activity.- The free electronic application by QR code contains additional tasks, as well as answers and explanations to the exercises in the book.
- The tasks are designed to promote active intellectual development of the child.

Open the book and join the adventures of the DZUMI in the world of logic with your child!