How is a protractor used?Ī protractor is a tool for measuring angles. And for some students, the visualization and hands-on activities adds in some multi-sensory learning that helps them learn better. The need for using protractors is becoming less popular as a result of computer software and the internet. ![]() Both types of protractors have a graduated circle and a pivoting arm. There are two basic types: the circular and the semicircular. You can also read a protractor by using its baseline, which is the side that has zero.Ī protractor is a simple tool used for calculating angles. ![]() The device has a number scale that goes from zero to 180 degrees, with one side of the angle lining up with 0 on its inner scale and a cosine scale on its outer scale.īy lining up these scales, you can measure angles accurately and get the right answer. What is a protractor?Ī protractor is a tool used in mathematics to calculate angles. Here are some of the most common uses of a protractor. Short reviews of the various science resources and curricula I have used with my own children.Before you start measuring things, you might be wondering: what is a protractor? What is its purpose? How do schools teach students to use a protractor?Īnd what can you measure with a protractor? This article will explain the basics.
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