The books in this series aim to pleasantly fill children's free time. Each double-page spread contains original and fun activities for endless hours of creative engagement.

Among other things, they include:
logic games,
knowledge tests,
visual perception exercises,
mazes,
patterns,
puzzles,
magic and number squares,
riddles

With these activities, the child:
assimilates the knowledge they have already acquired
gains new knowledge
practices their memory and observation skills
sharpens their visual perception, imagination, and curiosity
cultivates their creativity
learns to make logical and mathematical reasoning, process and formulate conclusions.

At the end of the books, there are detailed answers so that the child is left with no questions or doubts.