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.

Concepts

completing the square, quadratic equations, quadratic functions, algebraic expressions, solving quadratics

Show More Show Less

Additional Tags

math

Show More Show Less

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

Common Core

HSA-SSE.B.3.a HSA-SSE.B.3.b HSA-REI.B.4.a HSA-REI.B.4.b HSF-IF.C.8.a