Montessori classrooms for children from 2+1⁄2 or 3 to 6 years old are often called Children's Houses, after Montessori's first school, the Casa dei Bambini in Rome in 1906. A typical classroom serves 20 to 30 children in mixed-age groups, staffed by a fully trained lead teacher and assistants. Classrooms are usually outfitted with child-sized tables and chairs arranged singly or in small clusters, with classroom materials on child-height shelves throughout the room. Activities are for the most part initially presented by the teacher, after which they may be chosen more or less freely by the children as interest dictates. A teacher's role within a Montessori classroom is to guide and consult students individually by letting each child create their own learning pathway. Classroom materials usually include activities for engaging in practical skills such as pouring and spooning, washing up, scrubbing tables and sweeping. Also materials for the development of the senses, mathematical materials, language materials, music, art and cultural materials, including more science-based activities like 'sink and float', Magnetic and Non magnetic and candle and air.

Activities in Children's Houses are typically hands-on, tactile materials to teach concepts. For example, to teach writing, students use sandpaper letters. These are letters created by cutting letters out of sandpaper and placing them on wooden blocks. The children then trace these letters with their fingers to learn the shape and sound of each letter. Another example is the use of bead chains to teach math concepts, specifically multiplication. Specifically for multiples of 10, there is one bead that represents one unit, a bar of ten beads put together that represents 1×10, then a flat shape created by fitting 10 of the bars together to represent 10×10, and a cube created by fitting 10 of the flats together to represent 10×10×10. These materials help build a concrete understanding of basic concepts upon which much is built in the later years.
Explain the Montessori Method of education in pre-school and kindergarten
The Montessori Method for Education in pre-school and kindergarten is a unique approach to teaching children to build self-confidence and independence. Learning takes place in Children's Houses and are fully staffed with a mixture of qualified teachers and teaching assistants who guide and consult the individual child by letting each child create their own learning pathway. Activities are introduced by the teacher, but there is no requirement for a child to complete the activity until they are ready, as what the child learns is fully guided by an individual child's interest. Classrooms are equipped with child-sized tables and chairs with learning materials on child height shelves. 
Education covers a variety of areas, for example completing practical tasks including pouring water, washing up, cleaning tables and sweeping floors. They will have access to materials relating to mathematics, languages, music, art and culture. They are taught to learn basic concepts of mathematics and writing through a hands-on approach using tactile materials.