The didactic works of Maria Montessori have not been published or received in the German-speaking world, with the exception of parts of psychoarithmetic. The handbook on Montessori education develops a contemporary representation of a didactic guide for practical work with children based on the original texts. The focus is on the content and methodological structures of mathematics, language, and cosmic education, which are presented here for the elementary school level. The 92 illustrations in this book provide a didactically and methodologically structured overview of Montessori educational materials. Harald Eichelberger has prepared the most important writings of Maria Montessori in this handbook in a clear and comprehensible manner. Contents include: Maria Montessori and her pedagogy of self-education.