The Teen Bead Box — Individual Glass Beads 10-19 for Decimal System is a Sensorial Montessori material designed for children aged 3-6, crafted by Nienhuis Montessori to AMI standards.
This Teen Bead Box contains individual glass bead bars from 10 to 19, essential for introducing the decimal system and teen numbers in Montessori mathematics. The wooden storage box features a sliding lid and organized compartments, keeping the delicate glass bead bars secure and accessible for repeated practice with number composition and linear counting exercises.
“The senses, being explorers of the world, open the way to knowledge.”— Maria MontessoriThe Discovery of the Child
“Children display a universal love of mathematics, which is par excellence the science of precision, order, and intelligence.”
— Maria Montessori, The Discovery of the Child
The Teen Bead Box embodies Maria Montessori's principle of concrete to abstract learning, where children physically manipulate beautiful glass beads to understand the composition of teen numbers. This material bridges the critical gap between single-digit numbers and the decimal system, allowing the child to see and feel that teen numbers are composed of a complete ten plus units. The sensorial experience of handling the smooth glass beads engages multiple senses, creating neural pathways that support mathematical understanding. Through repeated exploration, children develop what Montessori called 'materialized abstractions' - concrete experiences that later transform into abstract mathematical thinking. The organized presentation in compartments respects the child's need for order and supports their mathematical mind's natural tendency to classify and categorize.
Each order includes everything needed for proper presentation and long-term use.
Follow the Montessori method of presentation for optimal child development.
Open the box and show the child the ten bar, naming it clearly
Select the 11 bead bar, count it touching each bead: 'ten, eleven'
Place the 11 bar next to the teen board showing '11'
Continue with 12-19, always counting from ten
Invite the child to select and count specific teen bead bars
Every material is carefully selected for durability, safety, and authentic Montessori experience.
Traditional glass beads provide weight and sensorial feedback essential for mathematical abstraction
Smooth wooden construction creates an inviting, organized presentation that encourages careful handling
Each material supports multiple areas of child development simultaneously.
Introduces teen numbers through concrete manipulation, bridging the gap between units and the decimal system.
Glass beads provide weight and texture feedback, reinforcing quantity concepts through multiple senses.
Working with ordered bead bars develops understanding of number sequences and mathematical patterns.
Handling individual bead bars refines pincer grip and careful movement necessary for later writing.
Designed for child-sized hands
Professional tips from AMI-trained guides to maximize the educational value of this material.
“Present this material only after solid understanding of quantities 1-10 and recognition of numeral 10”
Always count starting from the ten bead to reinforce the decimal system structure
Store the box at child's eye level to encourage independent selection and practice
Observe which teen numbers the child gravitates toward - this indicates their comfort level
Everything you need to know about this material.
The Teen Bead Box includes individual glass bead bars representing quantities from 10 to 19, organized in a wooden storage box with a sliding lid and compartments. Each bead bar is color-coded according to Montessori standards, with the ten-bar being golden and unit beads following the traditional color sequence.
This material provides a concrete, visual representation of teen numbers by combining a golden ten-bar with colored unit bars (1-9). Children physically see and handle that 13 equals one ten-bar plus three unit beads, making the abstract concept of place value tangible and memorable through sensorial experience.
Children should be familiar with quantities 1-10 and have experience with the colored bead stairs. They should also have practiced one-to-one correspondence and be able to count to at least 10. Prior work with the number rods and sandpaper numerals helps prepare children for success with teen beads.
Children can practice linear counting from 10-19, compose teen numbers by combining ten-bars with units, match bead quantities to number cards, perform simple addition with teens, and explore patterns in our number system. The material also supports skip counting and early place value understanding.
Glass beads provide superior sensorial feedback through their weight, temperature, and smooth texture. The quality of glass beads encourages careful handling and respect for materials while offering clear visual distinction between quantities. This authentic Montessori approach enhances concentration and precision in mathematical work.
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