Mathematics
Number, the decimal system, and operations through concrete materials.
Geometric Solids
May 12, 2026 · Material Guide
Geometric Solids The Geometric Solids are one of the most beautiful and engaging materials in the Montessori sensorial curriculum. This set of ten blue-painted wooden shapes invites children to explore three-dimensional geometry through touch, sight, and language — building a concrete understanding of form that lays the groundwork for abstract …
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 …
Negative Snake Game (Subtraction)
June 30, 2007 · Material Guide
Subtraction – for a complete set, consider this Montessori Snake Game Bead Set Age: 6 and older 2. Purpose: Teach the concept of zero, negative and positive numbers. A high-quality Montessori Colored Bead Stair Set from Amazon is perfect for this activity. Teaches concrete concept of subtraction as well as …