Rhombic Based PrismComplex 3D Geometric Form with Triangular Top
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-018802
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Product size
- 10 × 10 cm
- Construction
- Solid wood
- Finish
- Paint
- EAN
- 8719924009922
Final price incl. VAT. Delivery €5.90, €44.10 to go for free delivery.
Advice, warranty and returns are handled by us.
Why it costs €104.90
Behind the price of the original are things you can check yourself.
AMI approval
The material is approved by the Association Montessori Internationale (AMI). Nienhuis has made Montessori materials since 1929.
A verifiable original
The EAN 8719924009922 is on the box. It is the maker's number, not ours.
Rhombic Based Prism in a child's hands
A rhombic based prism from the blue geometric solids, the awkward one in the set and the more useful for it. A rhombus is a square that has been pushed over, and a prism built on one keeps the same base area while looking nothing like the square prism beside it. That is the whole lesson about area surviving a shear, met by hand rather than by formula. Derived from a base of 10 x 10 cm and a height of 20 cm. Sold individually. Solid hardwood, for ages 6 to 12.
Spatial Intelligence
Handling and examining the rhombic prism develops three-dimensional thinking and understanding of how shapes transform in space.
Geometric Vocabulary
Children learn precise mathematical language including terms like rhombus, apex, base, and prism through concrete experience.
Mathematical Foundations
Prepares for advanced geometry concepts including volume calculation and understanding of composite shapes.
How to present it
Place the rhombic based prism on a felt mat alongside other geometric solids. Have a tray with modeling clay, paper, and pencils nearby for extension work.
- 1Invite the child to explore the solid with both hands, tracing all edges and vertices with fingertips
- 2Introduce the nomenclature: 'This is a rhombic based prism.' Point to the rhombic base and trace its four equal sides
- 3Compare the rhombic base to the triangular apex, noting how the form tapers
- 4Count and identify all faces, edges, and vertices together
- 5Create impressions of each face in clay to explore the 2D shapes that compose the solid
3 tips for parents
- Look for rhombic shapes in everyday life - some tiles, certain gemstone cuts, or architectural details
- Support geometric vocabulary at home by using precise terms when your child shares their discoveries
- Provide modeling materials like clay or playdough for recreating geometric forms explored at school
If you are not sure it suits your child, we answer in person.
Norbert Kovalčín, founder of Faborino · write to him
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What's in the Box
- Rhombic Based Prism: Single solid wooden geometric form
Size and material
| Product size | 10 × 10 cm |
| Packaging | 25 × 17 × 12 cm |
| Construction | Solid wood |
| Finish | Paint |
| Recommended Age | 6-12 years |
Care
Wipe with slightly damp cloth, dry immediately
Frequently Asked Questions
What educational concepts does the Rhombic Based Prism teach?
This geometric solid introduces children to complex 3D shapes, spatial relationships, geometric vocabulary (rhombus, apex, edges, vertices), and the connection between 2D shapes and 3D forms. It supports advanced geometry studies and develops spatial reasoning skills.
How is this material presented in the Montessori classroom?
The teacher introduces the rhombic prism alongside other geometric solids, encouraging children to explore its unique properties through touch and observation. Children learn to identify the rhombic base, count edges and vertices, and compare it with other prisms and pyramids.
What activities can children do with the Rhombic Based Prism?
Children can trace the base to create 2D representations, compare it with other geometric solids, sort shapes by properties, create impressions in sand or clay, match with geometric cabinet shapes, and incorporate it into advanced geometry studies and architectural explorations.
Why is this prism painted rather than natural wood?
The painted blue finish provides visual consistency with other Montessori geometric solids, helps children focus on the shape rather than wood grain patterns, and creates a uniform appearance that aids in classification and comparison activities.
How does this material prepare children for advanced mathematics?
The rhombic prism introduces complex geometric concepts including oblique angles, non-regular polygons, and transitional forms. It prepares children for crystallography, advanced geometry, architectural studies, and develops the spatial visualization skills essential for higher mathematics.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Rhombic Based Prism