If you need protractors for your students, here’s an unbreakable option – protractors printed on a clear background and laminated. Available in 2 sizes: 6 per A4 sheet or A3. A3 protractor supplied with 4 magnets.
Use larger protractor with groups (for example 2 students make an angle, on the floor, with a piece of string and the third person measures) or use supplied magnets on your whiteboard.