Montessori teachers are trained through demonstration and the provision of opportunity to practice. The Montessori curriculum is organized around specific teaching materials which are developmentally sequenced. Each curriculum area is taught to teacher trainees by careful demonstration of the presentation and use of each curriculum materials in sequence. Students then practice the techniques they have seen demonstrated until they have mastered the material well enough to use with the children. The students absorb an understanding of child development and education through observation and explanation of the practice they see demonstrated. Further in-depth study of the theory is provided through a tutorial program of guided readings, lessons, and assignments. In this way, teachers learn the use of specific materials and techniques for helping children learn and develop. At the same time they develop a theory of learning, development, curriculum, and teaching which supports and is consistent with, the practice they are learning.