The Geometric Hierarchy Number Cards — Sliding Tiles with Colour System is a Sensorial Montessori material designed for children aged 3-6, crafted by Nienhuis Montessori to AMI standards.
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.
“Free the child's potential, and you will transform him into the world.”— Maria MontessoriTo Educate the Human Potential
“Education is a natural process spontaneously carried out by the human individual, and is acquired not by listening to words but by experiences upon the environment.”
— Maria Montessori, Education for a New World
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.
Each order includes everything needed for proper presentation and long-term use.
Follow the Montessori method of presentation for optimal child development.
Invite the child, saying 'I'd like to show you something special about numbers.' Demonstrate slowly sliding one tile out using thumb and index finger.
Place the removed tile below the tray. Point to the green '1' and say simply 'one unit.' Pause for the child to absorb.
Continue removing tiles one by one, placing them in a horizontal line, counting 'one, two, three...' as you go.
After removing all tiles, slowly return them to the tray in reverse order, sliding each carefully into place.
Invite the child to try, stepping back to observe without interfering unless assistance is requested.
Every material is carefully selected for durability, safety, and authentic Montessori experience.
The smooth wooden tray provides a defined workspace that helps the child focus on the mathematical concepts while developing fine motor control through tile manipulation.
Each material supports multiple areas of child development simultaneously.
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.
Designed for child-sized hands
Professional tips from AMI-trained guides to maximize the educational value of this material.
“Present this material after the child has worked extensively with sensorial color tablets and can discriminate shades”
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
Everything you need to know about this material.
This 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.
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