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Interactive

Completing the Square

Curated and Reviewed by Lesson Planet
This Completing the Square interactive also includes:

Determine the area of a square with quadratics. Pupils use the interactive to visualize the process of completing the square. Scholars build a square area model to represent a quadratic expression then determine the amount that needs to be added to make a complete square.

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CCSS: Designed
Concepts
completing the square, quadratic equations, quadratic functions, algebraic expressions, solving quadratics
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Additional Tags
math
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Instructional Ideas
  • Use algebra tiles to complete the square using the same process as the interactive
  • Lead a discussion on whether completing the square works if b is odd
Classroom Considerations
  • The class should be familiar with area models for multiplication
  • Requires a CK-12 account to access, which is free
Pros
  • Uses colors to show the areas in the quadratic expression
  • Provides hints for the problems
Cons
  • None