The Nail Board: Geometry Exploration
Made by Nienhuis Montessori · shipped by Heutink International (Netherlands) About the maker
A beechwood box whose lid is the nail board, so the material and its storage are the same object. A child stretches elastic bands between the nails to make shapes, angles, fractions and patterns, and because a band can be moved with one finger, a wrong shape costs nothing to fix. That is what keeps children experimenting here rather than waiting to be told. The activity books carry the work upward into harder geometric relationships as the child is ready. Beechwood box with coloured elastic bands, for ages 3 to 6.
“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.'”
The Nail Board transforms abstract geometric concepts into tangible experiences through its metal pegs and colored rubber bands. Each stretch of a rubber band between pegs creates a visible line segment, allowing children to construct triangles, squares, and complex polygons with their own hands. The protractor component elevates this exploration by introducing precise angle measurement, connecting the physical shapes formed on the board to mathematical language.
- Constructs and identifies basic geometric shapes including triangles, quadrilaterals, and polygons
- Develops understanding of perimeter, area, and spatial relationships through hands-on exploration
- Measures and compares angles using the protractor tool
- Recognizes patterns, symmetry, and transformations in geometric figures
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This progression from manipulating rubber bands to measuring angles mirrors the child's journey from concrete to abstract thinking. The Nail Board's grid of metal pegs provides a structured framework where geometric relationships become discoverable through experimentation. Children can create identical shapes in different orientations, compare areas visually, and explore symmetry by stretching bands across the board's surface. The immediate visual feedback when a rubber band snaps into place satisfies the child's need for self-correction while building spatial intelligence through repeated geometric construction.
How to present it
Follow the Montessori method of presentation for optimal child development.
Place the Nail Board on a table at child's working height. Arrange colored rubber bands in a small container beside the board. Position the protractor within easy reach.
- 1
Demonstrate creating a simple triangle by stretching one rubber band around three pegs
Use contrasting colored bands to highlight different shapes - 2
Invite the child to replicate the triangle in a different location on the board
Let them discover that triangles can face different directions - 3
Create a square together, counting the pegs along each side
Emphasize equal sides by using the same color band - 4
Introduce the protractor to measure one angle of the square
Show how to align the protractor's center with the peg - 5
Challenge the child to create their own shape and describe it
Ask questions about sides, corners, and similarities to known shapes
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
The Nail Board: Geometry Exploration
