This training system is well adapted to child development in preschool age and upon entering the first grade. It has been tested on many thousands of children of nursery-school and grade-school age and fosters their intellectual abilities, particularly the phonological components that facilitate learning to read and write. Scientifically backed is also the fact that children who are experiencing delayed development or are disadvantaged in some other way will profit most from this program. Michael Bleyenberg's colour illustrations highlight the tasks and invite the reader to enter a playful and enduring environment. The clear and easily understandable directions enable teachers, educators and parents a quick and successful implementation.