Standard #: MAFS.912.N-CN.1.3 (Archived Standard)


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Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.


General Information

Subject Area: Mathematics
Grade: 912
Domain-Subdomain: Number & Quantity: The Complex Number System
Cluster: Level 1: Recall
Cluster: Perform arithmetic operations with complex numbers. (Algebra 2 - Additional Cluster) -

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Date Adopted or Revised: 02/14
Content Complexity Rating: Level 1: Recall - More Information
Date of Last Rating: 02/14
Status: State Board Approved - Archived

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Related Resources

Lesson Plan

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

Students always ask, “What’s the point of complex numbers?” One application of complex numbers is cell phone signals and their wavelengths. This lesson introduces division of complex numbers by hooking students in with the topic of cell phones. Students will attempt to calculate a cell phone signal wavelength involving complex numbers and discover the use of complex conjugates. Then, students will practice with complex number division using a Kagan strategy called Rally Coach.  To conclude, students will use white boards and dry erase markers to review the concepts covered in class.


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