
The Hollow Number Shapes: International Version is a Mathematics Montessori material designed for children aged 3-6, crafted by Nienhuis Montessori to AMI standards.
These beautifully crafted wooden number boards feature precisely routed channels that guide children in forming numerals 0-9 with proper directionality. Each board provides a tactile pathway for tracing, helping young learners develop muscle memory for number formation while engaging multiple senses in the mathematical learning process.
“Children display a universal love of mathematics, which is par excellence the science of precision, order, and intelligence.”— Maria MontessoriThe Discovery of the Child
“The greatest sign of success for a teacher is to be able to say, 'The children are now working as if I did not exist.'”
— Maria Montessori, The Absorbent Mind
The Hollow Number Shapes serve as a concrete bridge between the child's sensorial exploration and abstract mathematical understanding. Each wooden board's precisely routed channel creates a physical boundary that naturally constrains finger movement, allowing children to internalize correct numeral formation through repeated tactile experience. Unlike flat number cards, these hollow pathways engage the child's muscular intelligence—the hand educates the mind as fingers trace through each carved groove. The wooden boards transform number writing from an abstract copying exercise into a sensorial discovery where the child's finger follows the exact path needed for proper numeral construction. This material recognizes that mathematical abstraction emerges from concrete manipulation; by feeling the curves of an 8 or the angles of a 4 within these channels, children build a physical memory of number symbols before attempting to reproduce them with a pencil. The Hollow Number Shapes respect the child's need to touch and trace repeatedly, providing unlimited practice without the frustration of incorrect formation.
Each order includes everything needed for proper presentation and long-term use.

Follow the Montessori method of presentation for optimal child development.
Demonstrate tracing the numeral 1, using your dominant index finger to follow the routed channel from start to finish
Invite the child to trace the same numeral, watching as their finger follows the carved pathway
Continue with numerals 2 and 3, always starting at the marked beginning point
After tracing in the boards, invite the child to 'write' the same numeral in sand or on paper
Every material is carefully selected for durability, safety, and authentic Montessori experience.
Each board is crafted from quality wood, providing the perfect weight and texture for repeated tracing practice. The natural material offers warmth and durability that synthetic alternatives cannot match.
Each material supports multiple areas of child development simultaneously.
The engraved channels guide proper stroke order and direction, establishing correct writing patterns from the start.
Tracing through the grooves provides sensory feedback that reinforces number recognition through touch and movement.
Builds fine motor control and hand strength essential for later pencil work and mathematical notation.
Connects the abstract concept of numbers with concrete, physical experience through repetitive sensorial exploration.

Designed for child-sized hands
Professional tips from AMI-trained guides to maximize the educational value of this material.
“Store boards vertically in a dedicated rack so children can select specific numerals for practice”
Pair with sandpaper numerals for children who benefit from contrasting textures
Create a 'number of the day' ritual where one board is featured for focused practice
Document which numerals each child struggles with—the channels reveal formation challenges immediately
Everything you need to know about this material.
The Hollow Number Shapes are designed for children ages 3-6 years old, aligning with the sensitive period for mathematical concepts and fine motor development in early childhood.
Children trace the routed channels with their fingers or a wooden stylus, following the correct formation pattern for each numeral. This tactile experience helps develop proper number writing habits and muscle memory.
This material develops number recognition, proper numeral formation, fine motor control, hand-eye coordination, and pre-writing skills. It also provides sensorial preparation for mathematical concepts.
The set includes 10 wooden boards featuring numerals 0-9 with precisely routed channels. The International Version uses standard Western Arabic numerals commonly used in European and international contexts.
Unlike paper-based practice, these boards provide physical boundaries that guide correct formation. The tactile feedback helps children self-correct and builds muscle memory before transitioning to writing on paper.
Can't find what you're looking for?
Contact Our Experts
Share your experience with this material and help other educators and parents.
