Instructional Video

Quadratic Graphs: Completing the Square

What does a square have to do with a quadratic function? Young scholars learn that completing an algebraic square is helpful when graphing the quadratic functions. The video instructor demonstrates rewriting quadratic functions in vertex form and then using transformations to sketch a graph. Examples focus on vertices with integer coordinates.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Have learners graph the standard and vertex form of the equation to reinforce  the idea that they are the same
  • Incorporate the resource to teach completing the square to find the vertex of a quadratic function
Classroom Considerations
  • Expects proficiency in completing the square and transformations prior to the lesson
Pros
  • Provides reference to videos on important background information
  • Reviews key information prior to beginning the new instruction
Cons
  • None