The books in this series aim to pleasantly fill children's free time. Each double page contains original and entertaining activities for endless hours of creative engagement. Among other things, they include:

• logic games
• knowledge tests
• visual perception exercises
• mazes
• patterns
• riddles
• magic and number squares
• puzzles

With these activities, the child:

• absorbs the knowledge they have already acquired
• master new knowledge
• exercises their memory and observation skills
• sharpens their visual perception, imagination, and curiosity
• nurtures their creativity
• learns to make logical and mathematical reasoning, to process and formulate conclusions.

At the end of the books, there are detailed answers, so the child will not be left with any questions or doubts.