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Buying a new sofa? Learn how to use the Pythagorean Theorem, as well as algebra and graphing techniques, to determine whether the sofa will fit around a corner (which I'm sure you'll agree is a very important consideration!).

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CCSS: Designed
Instructional Ideas

  • Instruct students to work in pairs so the measuring activity does not become tedious
Classroom Considerations

  • Graphing calculators are only listed in the materials as suggested, but the student worksheet assumes that graphing calculators are used; suggest having graphing calculators available
Pros

  • The lesson starts with a simpler question and builds up to the leading question
  • A wide-ranging number of standards is covered
Cons

  • There is a typo in the answer key that incorrectly identifies the length of the original sofa