Instrument Measurement Of Angles, Metal
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-012400
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Construction
- Metal with engraved markings
- Scale
- 360-degree circular graduation
- EAN
- 8719924006921
Final price incl. VAT. Delivery €5.90, €109.10 to go for free delivery.
Advice, warranty and returns are handled by us.
Why it costs €39.90
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 8719924006921 is on the box. It is the maker's number, not ours.
Instrument Measurement Of Angles, Metal in a child's hands
Part of the Introduction to Numbers collection, this precision metal protractor features a full 360-degree circular scale with clearly engraved markings, essential for advanced geometry work in the Montessori elementary classroom. The durable metal construction and precise calibration support accurate angle measurement activities, helping children develop mathematical precision and spatial reasoning through active discovery of geometric concepts.
Mathematical Precision
Develops accuracy in angle measurement and understanding of degrees through hands-on manipulation.
Geometric Understanding
Supports exploration of circles, angles, and rotational symmetry in concrete form.
Abstract Thinking
Bridges concrete angle measurement to abstract geometric concepts and calculations.
Fine Motor Control
Precise alignment and reading of measurements refines hand-eye coordination and attention to detail.
How to present it
Place the metal protractor on a table with geometry paper, pencil, and ruler. Prepare angle cards showing various angles drawn clearly for initial measurement practice.
- 1Demonstrate placing the protractor's center point precisely on the angle's vertex
- 2Align the baseline of the angle with the zero-degree mark on the protractor
- 3Read the measurement where the second ray crosses the degree markings
- 4Record measurements and classify each angle by type
3 tips for parents
- Look for angles in everyday life: roof slopes, furniture joints, and letter formations
- Practice estimating angles before measuring to develop spatial intuition
- Connect angle concepts to activities like sports (basketball shots) or art (perspective drawing)
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
- Metal Protractor: 360-degree circular scale with engraved markings
Size and material
| Packaging | 14 × 14 × 1 cm |
| Construction | Metal with engraved markings |
| Scale | 360-degree circular graduation |
| Recommended Age | 6-12 years |
Care
Wipe with soft, dry cloth; avoid abrasive cleaners
Frequently Asked Questions
What makes this metal protractor suitable for Montessori education?
This precision instrument features a full 360-degree scale with clearly engraved markings that support hands-on exploration of angles and geometric concepts. The durable metal construction allows repeated use while maintaining accuracy, essential for the concrete-to-abstract progression in Montessori mathematics.
At what age should children begin using this angle measurement tool?
This protractor is designed for children ages 6-12, typically introduced in lower elementary (6-9 years) for basic angle concepts and used throughout upper elementary for advanced geometry work, including angle construction, measurement, and geometric proofs.
How does this tool support geometry learning in the classroom?
The 360-degree circular scale enables children to measure and construct angles precisely, supporting lessons on acute, obtuse, and reflex angles, angle relationships, and polygon construction. It integrates with other Montessori geometry materials for comprehensive spatial reasoning development.
What are the key features of this metal protractor?
This professional-grade protractor features durable metal construction, a complete 360-degree circular scale, clearly engraved degree markings for precision, and a size appropriate for children's hands. The high-quality materials ensure long-lasting classroom use and accurate measurements.
How do teachers present this material in Montessori lessons?
Teachers typically introduce the protractor after children understand angle concepts through sensorial materials. Presentations include demonstrating proper alignment, reading measurements, constructing specific angles, and exploring angle relationships in polygons, progressing from simple measurements to complex geometric constructions.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Instrument Measurement Of Angles, Metal