Area of Rectangles Using Sums and Differences

Use the formula for the area of a rectangle for more than just rectangles! Scholars see that they can use common area formulas to find the area of irregular shapes. 

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CCSS: Adaptable
Instructional Ideas

  • Pause the video after examples to address pupils' questions
  • After viewing the video, ask learners to create a similar problem for a partner to solve
Classroom Considerations

  • Expects a familiarity with area formulas
  • The second in a series of 40 video lessons
Pros

  • Instructor shows multiple approaches to the same problem
Cons

  • Presentation in video is not engaging and may not hold the attention of learners
Common Core