The development of children is our common concern. This is why Bethesda Children's Hospital and Móra Publishing House teamed up in this unusual book: the hospital's professional knowledge and movement development experience were shared with the Móra family. For those dedicated parents who want to do something for their child's development, for those who are curious about the latest development trends, who want to track what is considered normal in the given stage of life or simply want to get inspiration for tasks and games that can be done on weekdays.