Instrument Measurement Of Angles, Metal

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.

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.

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.

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.

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.