- Premium ABS plastic construction with smooth edges for safe handling by children

- Precision-engineered compass tool for accurate angle measurement in math exercises

- Dual-function design: teaching aid + hands-on STEM toy for geometry concepts

- Specifically tailored for 2nd grade Southwest/Northwest regional curriculum standards

- Transparent protractor base with laser-etched degree markings for durability

- Includes 8 magnetic directional markers for interactive geography lessons

- Compact 15cm size fits standard student backpacks for classroom/home use

- Reinforced needle bearing ensures smooth 360° rotation without wobbling

- Multi-sensory learning: combines tactile manipulation with visual angle calculation

- Complies with EN71 and ASTM F963 international safety certifications

- Bulk purchase optimized for schools/educational centers with wholesale pricing