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Subject

Mathematics (NYS P-12 Common Core)

Description

In this lesson you will learn how angles formed by quarter turns are 90 degrees and three-quarter turns are 270 degrees by looking at the hands of a clock.

Resource

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Measure quarter and three-quarter rotations

Related Content

• Measure full and half rotations by LearnZillion
• Understand and measure one-degree angles by LearnZillion
• Estimate the measure of an angle using benchmark and one-degree angles by LearnZillion
• Solve real world problems involving angle measurement by LearnZillion

Content Provider

LearnZillion

LearnZillion is a learning platform that combines video lessons, assessments, and progress reporting. Each lesson highlights a Common Core standard, starting with math in grades 3-9.

Related Academic Standards

New York State

NY-4.MD.5a Recognize an angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles.

4.MD.5.a An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a "one-degree angle," and can be used to measure angles.