Exercise books are an ideal helper in the recurrence of the substance of elementary schools during the holidays. The children will not lose their knowledge and the ability to concentrate that they have laboriously acquired over the past school year, and the September return to school will be much easier for them. Each double page contains exercises from Czech language, mathematics, but also first. The tasks are short and clearly graphically processed and are based on primary schools. The curriculum is also practiced in the form of playful tasks that children entertain and motivate them to solve further exercises.