This specialized number card holder presents the concept of geometric hierarchy through a sliding tile system featuring color-coded number representations. The wooden tray houses approx. 8 removable tiles displaying the numeral '1' in hierarchical color coding (green for units), supporting the child's understanding of place value and the decimal system through visual and tactile exploration.
“The senses, being explorers of the world, open the way to knowledge.”— Maria MontessoriThe Discovery of the Child
The Geometric Hierarchy of Number embodies Maria Montessori's principle of making abstract concepts concrete through sensorial experience. By presenting the decimal system through color-coded tiles, this material bridges the gap between sensorial and mathematical understanding. The green unit tiles connect directly to the hierarchical color system used throughout Montessori mathematics materials, creating a consistent visual language. This material respects the child's need for repetition and manipulation, allowing them to physically slide and arrange tiles while internalizing the concept that our number system is built on groups of ten. The isolation of difficulty—focusing solely on the unit value—enables deep concentration and prepares the mathematical mind for understanding place value through sensorial impression before formal introduction.

Use exaggerated, deliberate movements to highlight the precision required
Avoid over-explaining; let the material speak through its design
Maintain consistent spacing between tiles to emphasize individual units
Model satisfaction in completing the cycle of activity
Resist correcting minor imperfections; focus on the child's engagement
Use exaggerated, deliberate movements to highlight the precision required
Avoid over-explaining; let the material speak through its design
Maintain consistent spacing between tiles to emphasize individual units
Model satisfaction in completing the cycle of activity
Resist correcting minor imperfections; focus on the child's engagement

Heritage
Since 1929

Trusted by
Schools Worldwide

Handcrafted
in Europe

AMI
Endorsed

Introduces the geometric hierarchy of numbers through color-coding, preparing for advanced decimal system work.
Color-coded system helps children distinguish between units, tens, hundreds, and thousands.
Sliding tile system develops understanding of numerical order and place value relationships.
Store near other mathematical materials to create visual connections in the environment
Observe for the child's readiness to connect this sensorial impression with actual quantity work
Use precise mathematical language sparingly—let the visual impact precede verbal labels
“Present this material after the child has worked extensively with sensorial color tablets and can discriminate shades”
Everything you need to know about this material.
Contact Our ExpertsThis material introduces children to place value and the decimal system through color-coded number tiles. It helps children visually and tactilely understand that numbers are composed of units, tens, hundreds, and thousands, with green representing units in the Montessori color-coding system.
Children slide the removable tiles in and out of the wooden tray, manipulating the color-coded number representations. They can arrange and rearrange the tiles to explore number relationships, practice recognizing place values, and build a concrete understanding of the hierarchical nature of our number system.
While it introduces mathematical concepts, this material is classified as Sensorial because it focuses on visual discrimination and tactile exploration of the geometric properties of numbers. It prepares the child's senses for later abstract mathematical work by providing concrete, color-coded representations.
This material is designed for children ages 3-6 years. It's typically introduced after children have worked with other sensorial materials and have developed fine motor control. The material bridges sensorial work with early mathematical concepts.
By introducing the color-coding system (green for units, blue for tens, red for hundreds), this material prepares children for the golden bead material and other decimal system work. It creates a visual and tactile foundation for understanding place value before children work with larger numbers.
Share your experience with this material and help other educators and parents.
Trusted Worldwide
Premium educational materials, trusted by Montessori educators and families across Europe.

Faborino quality
Montessori-aligned