Triangular PrismThree-Sided Geometric Solid
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-018803
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Product size
- 10 × 10 cm
- Primary Material
- Painted wood
- Finish
- Blue lacquered coating
- EAN
- 8719924009939
Final price incl. VAT. Delivery €5.90, €74.10 to go for free delivery.
Advice, warranty and returns are handled by us.
Why it costs €74.90
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 8719924009939 is on the box. It is the maker's number, not ours.
Triangular Prism in a child's hands
A prism on a triangular base, from the volume set derived from a base of 10 by 10 cm and a height of 20 cm. What a single prism teaches is that the shape of the base does not change the method: a prism has the same cross section the whole way up, so its volume is the area of that cross section carried through the height, whether the base is a square, a triangle or anything else. That one idea covers every prism a child will ever meet. Sold individually, for ages 6 to 12.
Geometric Understanding
Develops spatial reasoning and understanding of three-dimensional forms through hands-on exploration.
Mathematical Foundations
Prepares for advanced geometry concepts including surface area, volume, and cross-sections.
Sensorial Discrimination
Refines the stereognostic sense through handling and exploring the prism's unique shape and edges.
How to present it
Place the triangular prism on a neutral-colored mat. Have the geometric solids basket nearby containing other solids for comparison. Ensure hands are clean and dry for optimal tactile experience.
- 1Invite the child to explore the prism with both hands, feeling all surfaces
- 2Introduce vocabulary: 'triangular base,' 'rectangular faces,' 'edges,' 'vertices'
- 3Compare with rectangular prism, noting similarities and differences
- 4Trace around the bases and faces on paper to create net diagrams
- 5Roll clay slabs and construct a triangular prism, comparing with the solid
3 tips for parents
- Point out triangular prisms in everyday life: roof sections, packaging, playground equipment
- Create triangular prisms using cardboard or building blocks at home
- Support vocabulary development by using geometric terms during daily conversations
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
- Triangular Based Prism: Blue lacquered geometric solid
Size and material
| Product size | 10 × 10 cm |
| Packaging | 25 × 11 × 12 cm |
| Primary Material | Painted wood |
| Finish | Blue lacquered coating |
| Recommended Age | 6-12 years |
Care
Wipe with slightly damp cloth, dry immediately
Frequently Asked Questions
What are the dimensions and construction details of this triangular prism?
This triangular based prism features smooth, precisely crafted edges with a high-quality blue lacquered finish. The solid is constructed from durable wood with exact geometric proportions that align with Montessori standards for sensorial materials, ensuring accurate representation of the three-dimensional form.
How does this prism support geometric learning for ages 6-12?
The triangular prism helps children understand three-dimensional geometry through tactile exploration. By handling and examining the solid, children internalize concepts of faces, edges, vertices, and the relationship between 2D shapes and 3D forms, preparing them for advanced geometry studies.
What activities can children do with this geometric solid?
Children can trace the faces to discover the rectangular and triangular shapes, compare it with other geometric solids, create impressions in sand or clay, match it to corresponding geometric cards, and use it for volume and surface area explorations in upper elementary mathematics.
How does this relate to other Montessori sensorial materials?
This triangular prism is part of the geometric solids set and builds upon earlier work with the geometric cabinet and constructive triangles. It connects to the blue geometric solids series and prepares children for work with geometric nomenclature cards and advanced mathematical concepts.
Why is the blue lacquered finish important for sensorial work?
The smooth blue lacquered finish provides consistent tactile feedback and visual appeal while maintaining focus on the geometric form rather than surface variations. The uniform color helps children concentrate on the shape's properties, and the quality finish ensures durability through repeated handling during sensorial explorations.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Triangular Prism