Set Of Yellow Constructive Triangles
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-00490040
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Primary Material
- Painted wood
- Finish
- Yellow paint with black line markings
- EAN
- 8719924002992
Final price incl. VAT. Delivery €5.90, €68.10 to go for free delivery.
Constructive Triangles (Nienhuis) €339.90Advice, warranty and returns are handled by us.
Why it costs €80.90
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 8719924002992 is on the box. It is the maker's number, not ours.
Set Of Yellow Constructive Triangles in a child's hands
The Set of Yellow Constructive Triangles puts children in direct contact with geometric relationships through real-world practice. This essential Sensorial material features precisely crafted wooden triangles with black line divisions that guide children in discovering how triangles combine to form other shapes. Part of the complete Constructive Triangles series, this yellow set develops spatial reasoning and prepares the mathematical mind through concrete geometric experiences.
Geometric Understanding
Children discover how triangles combine to create squares, rectangles, and other polygons through hands-on exploration.
Visual Discrimination
Matching black lines on triangle edges develops visual perception and attention to detail.
Mathematical Mind
Concrete experiences with geometric shapes prepare children for later abstract mathematical concepts.
Problem-Solving Skills
Finding which triangles combine to form new shapes develops logical thinking and spatial reasoning.
How to present it
Place the yellow triangle box on a work mat. Ensure ample space for arranging triangles. Sit to the child's dominant side.
- 1Open the box and carefully remove all triangles, placing them randomly on the mat
- 2Select two triangles with matching black lines and slowly bring them together
- 3Align the black lines precisely until they touch, forming a new shape
- 4Continue matching triangles by their black lines, discovering all possible combinations
- 5After forming all shapes, systematically return triangles to their box compartments
3 tips for parents
- Create paper triangles at home with marked lines for continued exploration
- Point out triangular compositions in architecture and nature during outings
- Avoid correcting 'wrong' combinations - all explorations build spatial understanding
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
- Yellow triangular pieces: Approx. 7 pieces with black line divisions
- Various triangle configurations: Including equilateral and right-angled triangles
Size and material
| Packaging | 32 × 24 × 4 cm |
| Primary Material | Painted wood |
| Finish | Yellow paint with black line markings |
| Recommended Age | 3-6 years |
Care
Wipe with slightly damp cloth, dry immediately
Frequently Asked Questions
What shapes can children create with the Yellow Constructive Triangles?
Children can form various geometric shapes including hexagons, parallelograms, rhombuses, and trapezoids by combining the triangles along their black guide lines. This hands-on exploration helps them understand how complex shapes are composed of simpler triangular units.
How do the black lines on the triangles support learning?
The black lines serve as visual guides showing where triangles should be joined together. These control markers help children self-correct their work and discover geometric relationships independently, which is a key principle in Montessori education.
What is the recommended age for introducing this material?
The Yellow Constructive Triangles are designed for children ages 3-6 years. They should be introduced after the child has worked with basic Sensorial materials like the Pink Tower and Brown Stair, typically around age 4.
How does this yellow set differ from other Constructive Triangle boxes?
The Yellow box contains specific triangle configurations with unique black line patterns that create different geometric explorations than the blue, triangular, or rectangular boxes. Each set in the series offers distinct learning opportunities for discovering geometric principles.
What skills does this material develop beyond geometry?
Beyond geometric understanding, this material develops concentration, problem-solving abilities, fine motor control, visual discrimination, and prepares the mathematical mind for later abstract concepts in geometry, fractions, and spatial relationships.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Set Of Yellow Constructive Triangles