The practice book "Numbers" with Pettersson and Findus offers a fun and educational way for children to prepare for school. The beloved characters from children's literature guide young learners through various exercises aimed at enhancing their understanding of numbers. With 24 pages filled with engaging tasks and illustrations, learning becomes an exciting experience. The book is written in German and is ideal for preschool children who want to become familiar with numbers in a playful manner. The combination of fun and learning makes this practice book a valuable companion for the first steps into the school world.