Lesson plan

Apply the concept of functions in the real-world by describing mathematical relations and determining whether they are functions

teaches Common Core State Standards CCSS.Math.Content.HSF-IF.A.1 http://corestandards.org/Math/Content/HSF/IF/A/1
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: A relation is a set of input and output values. A function is a special relation where one input has exactly one output. This lesson reinforces students’ understanding that a function is a rule that assigns to each input exactly one output. The task incorporates the students’ environments in describing relations that are and are not functions. The lesson builds towards identifying domains of a function and comparing properties of two functions later in the unit. Functions will be a fundamental concept in algebra and future high school math courses. Vocabulary: relation, function, input, output Special Materials: whiteboards or paper for students to record responses