Find the Area of a Rectangle Using a Polynomial (Example)

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Apply polynomial multiplication to area. The short video in a large series shows the process of creating a polynomial formula for the area of a rectangle. Using the two expressions for the length and width of a rectangle, pupils see how to find the formula for the area and then evaluate it for a given value.

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CCSS: Adaptable
Instructional Ideas

  • Provide several rectangles with polynomial areas that evaluate to the same area size, though the polynomials are different
Classroom Considerations

  • Requires the class to understand how to evaluate an expression
  • Assumes learners know the process of multiplying two binomials
Pros

  • Uses colors to highlight steps within the process
  • Solves the problem two different ways
Cons

  • None