Set of 30 Student Protractors

 

A protractor is a tool that allows you to measure an angle or construct an angle of a given measure.  These are 6 inch clear plastic protractors, great for a  a math classroom. Each protractor is marked in 1 degree increments. The protractor features a 6 inch and a 10 cm ruler on the crossbar. They come with pencil holes at center and 90 degrees.  There are many websites on the internet explaining the use of a protractor.  You can find them by searching "how to use a protractor".