Five Yellow PrismsGrid-Marked Geometric Exploration Set
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-0188B1
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Product size
- 20 × 10 × 2 cm
- Construction
- Solid wood with yellow paint
- Box Material
- Natural finished wood with sliding panel
- EAN
- 8719924010089
Final price incl. VAT. Free delivery.
Advice, warranty and returns are handled by us.
Why it costs €228.90
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 8719924010089 is on the box. It is the maker's number, not ours.
Five Yellow Prisms in a child's hands
Five wooden prisms of 20 x 10 x 2 cm, painted yellow and ruled in lines and squares, used to work out the volume of a rectangular prism. The ruling is what does the teaching: a child counts squares on a face, counts the layers, and arrives at volume as multiplication rather than as a formula handed down. Because the prisms are identical, they can be stacked and rearranged to show that the same volume survives a change of shape. Stored in a hinged wooden box with lid, for ages 6 to 12.
Mathematical Reasoning
Grid markings support understanding of area, volume, and algebraic relationships through hands-on exploration.
Geometric Abstraction
Transitions from concrete sensorial work to abstract mathematical concepts in Elementary curriculum.
Problem-Solving Skills
Encourages systematic exploration and discovery of mathematical relationships between dimensions.
How to present it
Place the wooden box on a large work mat. Ensure adequate space for arranging prisms. Have graph paper and colored pencils available for recording discoveries.
- 1Remove prisms systematically, examining grid markings and comparing dimensions
- 2Arrange prisms to show progression of linear dimensions
- 3Build squares and cubes using the grid as a guide to explore area and volume
- 4Discover the formula for (a+b)² by arranging prisms to form larger squares
- 5Explore (a+b)³ by building three-dimensional arrangements
3 tips for parents
- Resist explaining formulas - the material is designed for child-led discovery through manipulation
- Provide graph paper and notebooks for children to record their mathematical discoveries at home
- Connect prism work to real-world applications like architecture and engineering when interest arises
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
- Five Yellow Prisms: With precise grid markings
- Wooden Storage Box: With sliding front panel
Size and material
| Product size | 20 × 10 × 2 cm |
| Packaging | 22 × 15 × 12 cm |
| Construction | Solid wood with yellow paint |
| Box Material | Natural finished wood with sliding panel |
| Recommended Age | 6-12 years |
Care
Wipe with slightly damp cloth, dry immediately
Frequently Asked Questions
What mathematical concepts do the Five Yellow Prisms teach?
The Five Yellow Prisms support advanced mathematical learning including area calculation, volume measurement, algebraic thinking, spatial relationships, and the concrete understanding of mathematical formulas. The precise grid markings allow children to physically explore how dimensions relate to area and volume.
How do these prisms differ from other Montessori geometric materials?
These specialized yellow prisms feature precise grid markings that enable exact measurement and calculation work. Unlike basic geometric solids, they're designed specifically for Elementary students to bridge concrete manipulation with abstract mathematical concepts, particularly in algebra and advanced geometry.
What are the dimensions and specifications of this set?
The set includes five rectangular prisms of varying dimensions, each made from high-quality wood with durable yellow finish and precise grid markings. They come in a handcrafted wooden storage box with a sliding front panel for easy access and organized storage.
How do children progress in using these prisms from ages 6-12?
Younger Elementary students begin with basic area calculations and comparing dimensions. As they advance, children use the prisms for volume work, exploring mathematical relationships, and eventually connecting to algebraic concepts like squared and cubed numbers through hands-on manipulation.
What related Montessori materials complement the Yellow Prisms?
The Yellow Prisms work excellently with the Power of Two materials, Geometric Solids, volume measurement materials, and the Peg Board. They also connect to squared and cubed chain work, supporting a comprehensive understanding of mathematical relationships in the Elementary curriculum.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Five Yellow Prisms