Maria Montessori's Psychogeometry in hard cover, volume sixteen of The Montessori Series, 233 pages, 2011 edition, prepared from her Italian manuscript and the 1934 Spanish edition. It sets out her approach to teaching mathematics through geometry, and reading it is the clearest way to see that the geometry material is not a set of activities somebody assembled but the working out of one person's own mathematical thinking. Paper and cardboard.
“The hands are the instruments of man's intelligence.”
Psychogeometry reveals Dr. Montessori's profound understanding of how children naturally perceive geometric relationships in their environment.
This hardcover Volume 16 illuminates the connection between the child's sensorial experiences and their innate geometric intelligence. Through Psychogeometry's detailed explanations, educators discover why geometric forms captivate young minds and how the sensorial materials prepare children for mathematical abstraction. The book demonstrates that geometry emerges from the child's exploration of physical space, not from abstract teaching. Dr. Montessori's text in Psychogeometry shows how children construct geometric knowledge through manipulation of concrete materials before encountering formal mathematical concepts. This foundational work explains why the Pink Tower, Brown Stair, and Red Rods become stepping stones to understanding dimension, proportion, and spatial relationships. Psychogeometry provides the theoretical framework for presenting geometry as a living, discoverable science rather than a set of memorized facts.


Follow the Montessori method of presentation for optimal child development.
Create a quiet reading space with geometric materials nearby for reference. Have paper and pencil ready for sketching concepts from the text.
Read chapters sequentially, focusing on one geometric concept at a time
After each chapter, observe children working with related materials
Practice presenting materials using insights from the text
Create observation journals linking theory to classroom practice

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Provides essential understanding of Montessori's approach to geometry and spatial reasoning in early childhood.
Guides educators in presenting geometric concepts through sensorial exploration and concrete materials.
Read alongside The Discovery of the Child for comprehensive understanding of sensorial development
Everything you need to know about this material.
Contact Our ExpertsThis book explores how children naturally develop geometric understanding through sensorial experiences, covering the foundations of geometry education including shapes, spatial relationships, and the connection between concrete materials and abstract mathematical concepts in the Montessori method.
While written as a professional reference for Montessori educators, dedicated parents can benefit from understanding Dr. Montessori's approach to geometry education. However, it contains theoretical content that assumes some familiarity with Montessori principles and terminology.
Psychogeometry provides the theoretical foundation for using Montessori geometry materials like the geometric solids, constructive triangles, and metal insets. It explains why these materials are designed as they are and how they support the child's mathematical development.
The book focuses on geometry education for children ages 3-6, corresponding to the Montessori Casa dei Bambini (Children's House) level, though the principles extend to elementary education as children develop more abstract geometric thinking.
Yes, this is Dr. Maria Montessori's original work on geometry education, part of her comprehensive educational philosophy. As Volume 16 in The Montessori Series, it represents her authentic teachings on how children develop geometric understanding.
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