“The *Distance* Less Traveled

Use geometry to find your way from point A to point B! Learners work to build the Law of Cosines using a conceptual exercise. They use their knowledge of Law of Sines and a map triangulation activity to write their own equations for the Law of Cosines.

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CCSS: Adaptable
Instructional Ideas

  •  To increase motivation, modify the lesson to use a location familiar to your classes
  • Create a treasure hunt that requires pupils to use triangulation to locate
Classroom Considerations

  • Requires proficiency with the Law of Sines prior to the activity

  • A well-designed activity that allows scholars to take on the role of the mathematician
  • Provides notes to anticipate points of difficulty

  • Includes a broken link in the presentation on slide three
Common Core