Square Prism: Short Based Geometric Solid
Made by Nienhuis Montessori · shipped by Heutink International (Netherlands) About the maker
Part of the Geometric Solids collection, this Short Square Based Prism is a fundamental Montessori geometric solid that helps children develop spatial awareness and mathematical concepts. Part of the elementary geometry materials, this precisely crafted blue prism gives young learners a first look at three-dimensional forms, supporting their understanding of volume, surface area, and the relationship between two-dimensional and three-dimensional shapes.
“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.”
The Short Square Based Prism embodies Montessori's principle of concrete to abstract learning, where children manipulate tangible objects before advancing to abstract geometric concepts. This material honors the child's mathematical mind during the second plane of development (6-12 years), when they seek to understand the how and why of the world.
- Understanding the relationship between 2D faces and 3D forms
- Developing spatial reasoning and visualization skills
- Calculating surface area and volume of prisms
- Recognizing prisms in architecture and everyday objects
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Through sensorial exploration, children discover geometric relationships independently, building upon their earlier work with the geometric cabinet and constructive triangles. The material's precise dimensions and smooth surfaces provide clear, isolated concepts that allow children to internalize the properties of three-dimensional forms through repeated handling and investigation.

How to present it
Follow the Montessori method of presentation for optimal child development.
Place the Short Square Based Prism on a neutral-colored mat. Have paper, pencil, ruler, and the geometric sticks nearby. Ensure the child has experience with the geometric cabinet square shapes.
- 1
Invite the child to explore the prism with their hands, feeling all surfaces and edges
Allow unhurried exploration - the hand educates the mind - 2
Identify and count the faces (6), edges (12), and vertices (8)
Use three-period lesson vocabulary: face, edge, vertex - 3
Trace around each face on paper to discover the 2D shapes that compose the solid
Compare traced squares and rectangles to geometric cabinet shapes - 4
Measure edges to calculate surface area of each face
Connect to earlier work with area calculations using unit squares - 5
Build the net of the prism using the traced shapes
Let child discover multiple ways to arrange the net
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

Square Prism: Short Based Geometric Solid
