Completing the Square—Plotting Quadratics

Where is the turning point? The presentation demonstrates how the process of completing the square finds several points in the graph of a quadratic. One of the most important points found is the vertex of the graph. The video shows where to find the point in the process of solving a quadratic by completing the square.

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CCSS: Adaptable
Instructional Ideas

  • Conduct a review of the process of completing a square
Classroom Considerations

  • Individuals should know the relationship between the intercepts and the solutions and constant term of a quadratic
  • The class should be aware of how to determine if a graph opens upward or downward
Pros

  • Uses color coding to show the relationships between numerical values and points on the graph
  • Provides examples for the class to work
Cons

  • None