# Angles Are Measured By Number Of Degrees Math Games

In this series of games, your students will learn that an angle that turns through n one-degree angles is said to have an angle measure of n degrees. The Angles Are Measured By Number Of Degrees learning objective — based on CCSS and state standards — delivers improved student engagement and academic performance in your classroom, as demonstrated by research. This learning objective directly references 4.MD.C.5.b as written in the common core national math standards.

Scroll down for a preview of this learning objective’s games and the concepts.

**Concepts Covered**

Understand equal partitioning and unit iteration to understand angle and turn measure. An angle is the union of two rays, a and b, with the same initial point P. The rays can be made to coincide by rotating one to the other about P; this rotation determines the size of the angle between a and b. In an angle, each ray determines a direction and the angle size measures the change from one direction to the other. Angles are measured with reference to a circle with its center at the common endpoint of the rays and the rays intersection points in relation to their fraction of the circular arc.

An angle that turns through 1/360 of a circle is called a “one-degree angle,” and degrees are the unit used to measure angles. An angle that turns through n/360 of a circle is called an “n-degree angle” – use multiple values for n. A ray that moves from point A to point B one degree at a time has an angle measure of n degrees. The number of one-degree angles in an angle that measures n degrees is n.

A preview of each game in the learning objective is found below.

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