Can You Hear Me Now? Using Cell Phone Signals to Divide Complex Numbers

Without complex numbers, cell phones could not function. Scholars learn to divide complex numbers by applying them to the wavelengths of cell phone signals. They work to develop a method of division incorporating the conjugate. Then, through a collaborative activity, pairs work on practice problems.

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CCSS: Designed
Instructional Ideas

  • Use the closure activity as a check for understanding to guide planning for the follow-up lesson
Classroom Considerations

  • Individuals must already be proficient multiplying complex numbers to be successful with this lesson
  • Requires whiteboard space or small whiteboards
Pros

  • Connects learning to a meaningful real-life application
  • Includes sufficient practice
Cons

  • None
Common Core