Lesson plan

Represent and evaluate functions by using function notation

teaches Common Core State Standards CCSS.Math.Content.HSF-IF.A.2 http://corestandards.org/Math/Content/HSF/IF/A/2

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Big Ideas: Since functions have only one output for any input, it is possible to represent and evaluate them using an abbreviated form called function notation. Function notation requires a letter to represent the rule along with an input and an output. This lesson builds on the 8th grade understanding that a function is a rule that assigns to each input exactly one output. In the task for this lesson, students are introduced to formal function notation which further deepens the concept of representations of functions. The work with function notation presented in this lesson sets the stage for more formal work with transformations of functions (F.BF.3) and writing explicit and recursive formulas in order to model functional relationships (F.BF.2). Special Materials: none