Instructional Video

What Are Functions?

Curated and Reviewed by Lesson Planet

Setup the idea of functions for the class. Using sets, the presentation introduces the concept of a function. The initial example uses a general function but then moves on to equations as functions. The video provides an example of an algebraic equation that is not a function and introduces the vertical line test.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Lead a discussion on whether all function graphs must be connected
  • Show the class other ways to represent a function such as mappings
Classroom Considerations
  • Individuals should know how to evaluate an expression
  • This video is hosted on YouTube
Pros
  • Promotes practice to develop a better understanding
  • Provides examples of graphs and names of common functions
Cons
  • None