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Mathematics
Number, the decimal system, and operations through concrete materials.
The Red Rods
February 25, 2026 · Material Guide
The Red Rods (Long Stair) Ages 3 to 6 years old Material 10 red wooden rods, all the same thickness but varying in length from 10 centimeters to one meter. Each rod increases in length by 10 centimeters — the length of the smallest rod. The longest rod is 10 …
Montessori Sensorial Education and Early Math Experiences
June 30, 2007 · Material Guide
Why Montessori Math Begins With the Hands Maria Montessori believed that mathematical concepts should be introduced to young children as "materialized abstractions" — ideas made tangible through hands-on materials that children can touch, move, and explore. Rather than starting with symbols on a page, Montessori math begins with concrete objects …