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Lesson Plan

Recognize functions by comparing relationships that are functions with relationships that are not

teaches Common Core State Standards CCSS.Math.Content.HSF-IF.A.1 http://corestandards.org/Math/Content/HSF/IF/A/1
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Big Ideas: Functions describe a specific relationship between inputs (domain) and outputs (range). Each element of the domain is assigned exactly one element of the range. This lesson builds on students' 6th grade understanding that variables can be used to represent two quantities in a real-world problem that change in relationship to one another. Later in 8th grade, students understand that a function is a rule that assigns each input onto exactly one output, but most of the work is restricted to lists of ordered pairs, graphs, equations, and situations that represent linear functions. In this lesson, students are presented with examples and non-examples of functions. Students discover that in order for y to be a function of x for each input value (x), there is exactly one output value (y). The concepts presented in this lesson set the stage for work with the modeling standard F.BF.1: Write a function that describes a relationship between two quantities. Students should be familiar with the terms input, output, and the more formal terms independent and dependent.
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