Montessori Quote
...if a teacher has enough patience to repeat an exercise as often as a child, she can measure in herself the energy and endurance possessed by a child of a determined age. For this final purpose, the teacher can grade the materials and thus judge the capacity of a child for a certain kind of activity at a given stage of his development.
Maria Montessori, The Discovery of the Child, p. 153
Keywords: Role of Teacher, Teacher Training