Lesson plan

Compare functions by analyzing the relationships between quantities represented using different forms

teaches Common Core State Standards CCSS.Math.Content.8.F.A.2 http://corestandards.org/Math/Content/8/F/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Big Ideas: Functions illustrate real-life situations in multiple representations. Different representations can be compared using defining characteristics of functions, like rate of change and y-intercept. This task builds on students’ knowledge of functions and equations with constant rate of change in the form y = mx + b (8.EE.6). It extends students’ previous work comparing functions in the same representation. This task provides students with opportunities to analyze real-world situations and compare rate of change from various representations. It builds a foundation for later work with solving systems of equations (8.EE.7) and comparing linear functions with nonlinear functions. Vocabulary: function, rate of change, increasing, decreasing