The primary classroom is made up of children varying from ages 3 to 6 years old. The mixed age group exposes the children to many lessons in many ways at different times. It balances and completes the youngest through the oldest as they set the example and help all those around them. These young children are exposed to various lessons found in four main areas of the classroom - Practical Life, Sensorial, Language and Math.

Through the Practical Life exercises, the children gain independence, concentration, coordination and the will to learn more while completing purposeful daily activities. All of the child's senses are enhanced and sharpened through the exposure to the Sensorial materials. It is through the isolation of each sense and the work with the Montessori materials that this is made possible.

Throughout the classroom language is heard and expressed constantly. The primary teachers take note of each child's state of language and will then fill the inadequacies and deficiencies, correct mispronunciations and wrong usages of words and will enlarge the vocabulary already learned. In Montessori, the children work from the visual to intellectual, from the concrete to the abstract.

This is especially so in the Math materials. They begin by handling and manipulating "real qualities" in different ways until the abstraction is reached. Abstraction, in the Montessori sense, is not taught directly to the child. The children are given the "keep" neccessary to arrive through their own struggle to understand. This joyful process is part of the child's inner development and creation of him or her self.

An important aspect of the Montessori materials is the isolatation of the fact-being-studied. This is what Maria Montessori calls the "isolation of the difficulty." The Practical Life, Sensorial, Language, and Math materials are graded in sequence of the difficulty - allowing the children to easily and quickly understand and progress.