Angle Measurement

[Pages:68]Angle Measurement

By Myron Berg Dickinson State University

abstract

? This PowerPoint deck was created for a presentation. ? I discuss some ways other than degrees or radians in which angles are

measured ? Instead of using a radius of 1 to create radians, I discusses the results

of using 1 as the circumference or area of a circle to create an alternative unit of measure. Then I examined whether these units have any advantage, including greater simplicity, when compared to the values that result from radians.

Goals

? Provide background information for instruction about angle measurement

? Cover some strategies for helping students understand radian measure

Overview

? History of angle measurements ? Common methods used to measure angles today ? Cyclical angles ? Advantages of using radians to measure angles ? Helping students remember angle measurement values

The Unit Circle

? Expecting it to be simple ? but can be a struggle

Angle measurement strategies

Slope

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