Elementary Negative Snake Game: Individual Beads Glass
Made by Nienhuis Montessori · shipped by Heutink International (Netherlands) About the maker
The snake game rebuilt to introduce negative numbers. A child lays a snake of coloured bead bars, then works along it exchanging for golden tens, and the negative bars force the count back down through zero and out the other side. Meeting a negative quantity as a bar you physically remove is a very different thing from meeting it as a minus sign, and children who have done this rarely find negatives strange later. The tray holds the bead material, coloured, negative, black and white and red and white stairs, and golden ten bars. Glass beads with wooden boxes, for ages 6 to 12.
“The child is both a hope and a promise for mankind.”
The Elementary Negative Snake Game with its precision-crafted glass beads represents a pivotal moment in mathematical abstraction when children physically encounter quantities less than zero.
- Understanding negative numbers as quantities less than zero through bead manipulation
- Performing subtraction operations that result in negative values
- Recognizing patterns in positive and negative number relationships
- Developing mental strategies for integer operations
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Each color-coded glass bead bar in the painted wooden boxes provides tactile feedback as students arrange and exchange positive and negative values, transforming an abstract concept into concrete manipulation. The glass beads' weight and smooth texture offer sensory distinction between adding and subtracting quantities, while their transparent quality subtly suggests the 'emptiness' of negative values. Through arranging these glass bead bars into serpentine formations and systematically exchanging them, children discover that negative numbers follow predictable patterns just like positive ones. The Elementary Negative Snake Game bridges the gap between the concrete positive snake game of primary years and the abstract algebraic thinking required in upper elementary, allowing students to physically build equations that cross zero. This hands-on exploration with glass beads develops the mathematical imagination necessary for understanding integers, preparing children for algebra while maintaining the concrete-to-abstract progression fundamental to mathematical development.
How to present it
Follow the Montessori method of presentation for optimal child development.
Arrange the painted wooden boxes containing color-coded glass bead bars on a large work mat. Place positive bead bars (1-9) in one section and negative bead bars in another. Ensure adequate workspace for creating the snake formation.
- 1
Create initial snake using positive colored bead bars in random sequence
Let the child choose colors freely to maintain engagement - 2
Introduce negative (grey) bead bars, placing them after positive bars
Emphasize that grey beads 'take away' from the positive quantity - 3
Begin exchanging at the head of the snake, combining positive and negative values
Use zero as the crossing point, physically removing equal positive and negative quantities - 4
When exchanges result in negative values, use black and white bead bars to represent them
Black represents negative tens, white represents negative units - 5
Continue exchanges until reaching a final positive or negative sum
Record each exchange to reveal the equation being solved - 6
Verify the result by checking the original equation against the final bead configuration
This develops self-correction habits essential for advanced mathematics
Every Child Is a Little Creator
Heritage
Since 1929
In classrooms
Around the world
European brands
Nienhuis, GAM, Educo
AMI approved
To the association standard
Elementary Negative Snake Game: Individual Beads Glass
