Master is mastery over the use and meaning of the material offered in the classroom. This domain is directly related to the ability to present the material to girls and boys in an orderly manner, always based on the importance of the montessori three-step lesson. "the teacher will offer the material, but without ever giving the children complete freedom of choice until they have understood its usefulness" (p. 339) the beginning of this work with the material requires special dedication of the montessori guide in the observation work: "general supervision and individual lessons, taught with precision, are two means that allow the educator to help the child's development.

In this period she must try never to turn her back on the class while dealing with each individual child." (p. 341) as we explained in previous e commerce photo editing sections, the montessori guide must seek maximum freedom in the learning process, but that freedom must be subject to one's own responsibility with respect to the other people with whom the space is shared: "children build an orderly society without help. Adults need police, prisons, soldiers, canons. Children solve their problems in peace; they have shown us that freedom and discipline are two sides of the same coin, because scientific freedom leads to discipline." (p. 358) undoubtedly, the evolution of the times and of our society may force us to rethink some of the methodological principles exposed by montessori.

However, the central principles of both his method and the pedagogical foundations of the new school should be part of our daily practice. Going back, in this case, to reading the indications of montessori herself about her method should be the initial step of any montessori guide.the functional organization of the brain and the mental capacities of women show significant differences. This is confirmed by research in cognitive sciences , especially neuropsychology. The differences span a wide spectrum, from reflex actions to more complex behaviors.