Teachables Magnetic Teachers Protractor - 180°, 40 cmMake angle demonstrations clear, accurate, and interactive with the Magnetic Teacher's 180 Protractor a must have tool for whole class geometry instruction. Designed for magnetic whiteboard use, this large format protractor helps students visualise and understand the concept of angles with ease. Featuring bold, dual direction degree markings from 0 180 and 180 0, it allows for precise angle measurement in both clockwise and counterclockwise