Lesson plan

Interpret unit rate as slope by analyzing the graph

teaches Common Core State Standards CCSS.Math.Content.8.EE.B.5 http://corestandards.org/Math/Content/8/EE/B/5

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Big Ideas: Slope of a line is found by comparing its vertical change to its horizontal change over a certain interval. The slope of any line in the coordinate plane is a number equivalent to its rate of change which, when written with a denominator of 1, is called the unit rate. In this lesson, students will learn that slope and unit rate of a graph will always be equivalent. They will also understand that the rate of change can be interpreted in terms of the context of the problem, and that unit rate is the numeric value of the rate of change ( with a denominator of 1). Vocabulary: slope, rate of change, unit rate Special Materials: graph paper calculator