All of their work with the Practical Life and Sensorial materials brings order to children’s experiences, important indirect preparation for the mathematical mind. The developing child yearns to organize, classify, and abstract. Fortunately the whole world obliges with toes to count, temperatures to read, rain to gauge, and clocks to check. The Montessori math lessons lead the child through progressive hands-on activities, emphasizing concepts while preparing the child for abstractions. The extensions and variations we offer complement and support work with Montessori’s legendary math materials.