There should be ample opportunity in the environment for the child to practice, work through, and integrate with previous skills, any new function or skill that has been acquired.

Mario Montessori Jr, Education for Human Development

The education of the senses is attained through a repetition of the exercises. Their object is not that a child should come to know colours, shapes and various qualities, but that he should sharpen his senses by paying attention, making comparisons and forming judgements, that is, be engaged in real intellectual exercises.

Maria Montessori, The Discovery of the Child

A child will not perfect himself by repeated writing but by repeating the acts which prepare for writing.

Maria Montessori, The Discovery of the Child

If the object meets the inner needs of the child and is something that will satisfy them, it will rouse the child to prolonged activity. He masters it and uses it over and over again.

Maria Montessori, The Discovery of the Child