Take a deeper dive into the notation of a function. The video presentation uses grocery store prices as an example to explain the concept of a function. Pupils determine whether mappings are functions or not and find the domain and range. They evaluate functions with different input expressed in function notation and then use the learning exercise to practice their skills.

Concepts

function notation, domain, and range, range, functions

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Instructional Ideas

• Ask class members to come up with other relations in the real world that are functions

Classroom Considerations

• Requires the class to know how to solve quadratic equations in one variable
• Is the first lesson in a five-part unit on functions

Pros

• Shows detailed process in arriving at solutions
• Contains an additional worksheet to help achieve mastery

Cons

• None

Common Core

HSF-IF.A.1