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Instructional Video

Determine the Area of a Shaded Region Using a Polynomial (Example)

Curated and Reviewed by Lesson Planet

Looking at area with a hole. Using algebraic expressions as dimensions, learners see how to calculate the area of a rectangle that contains a square hole. The instructional video shows how to create a single expression for the area of the rectangle minus the area of the hole.

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CCSS: Adaptable
Concepts
algebraic expressions, area of rectangles, area of squares, binomials, multiplication binomials, combining like terms, area, area formulas
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Additional Tags
math
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Instructional Ideas
  • Lead a discussion on different ways to find the area of the shaded portion
  • Ask classmates to create figures and share with partners to determine the area
Classroom Considerations
  • Requires that pupils know how to multiply binomials and combine like terms
  • This video is hosted on YouTube
Pros
  • Highlights like terms to show which values to combine
  • Shows all the steps in the problem solving process
Cons
  • None