This is the book that introduced the Montessori method to America.  A radical departure from conventional educational wisdom when it first came on the scene, the Montessori method has become one of the most powerful and influential sets of ideas and practices on the education of children. This is an exposition of the theory behind Montessori's innovative educational techniques. She shows parents, teachers, and administrators how to "free a child to learn through his own efforts." The book introduces the guiding principles of the method: liberty for the child complemented by organization of the work by an adult.  Through movement and manipulation of the Montessori materials, and through thinking with the senses, the child develops a sense of order and logical thought.  With an Introduction by J.McV. Hunt.