Lesson plan

Compare multiple functions for inputs in shared domain values 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
teaches Common Core State Standards CCSS.Math.Content.HSF-IF.B.5 http://corestandards.org/Math/Content/HSF/IF/B/5
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 have a special notation that allows complicated relationships to be displayed in a concise and meaningful way. Functions can be used to mathematically model real-world situations. Using function notation, students will chose different letters to represent multiple functions as a way to organize their work. This will be done by mathematically comparing and contrasting cell phone plans that have different pricing structures for their text messaging service. Students will also have to explain the meaning of these functions in everyday language and justify which is the best plan for a given context. Vocabulary: function, function notation, domain, range Special Materials: none