Mathematics (2019) Grade(s): 09-12 - Applications of Finite Mathematics

MA19.FM.27

Identify and apply historic methods of apportionment for voting districts including Hamilton, Jefferson, Adams, Webster, and Huntington-Hill. Identify issues of fairness and paradoxes that may result from methods.

COS Examples

Examples: the Alabama paradox, population paradox

Unpacked Content

Knowledge

Students know:

  • Apportionment is a method of dividing based on population.

Skills

Students are able to:

  • Calculate an ideal ratio for diving objects based on populations.
  • Use the ideal ratio to determine exact district quotas and apply a variety of apportionment methods to determine apportionment of discrete objects such as representative seats.
  • Use a variety of apportionment methods to adjust the divisor and calculate subsequent quotas.
  • Identify specific examples of paradoxes or violation of the quota rule.

Understanding

Students understand that:

  • Some methods result in unfair paradoxes and may favor larger or smaller districts.
  • Apportionment methods are used to divide discrete objects when they cannot be divided exactly proportional to the populations.

Vocabulary

  • Ideal ratio
  • Quota
  • Hamilton method
  • Jefferson method
  • Adams method
  • Arithmetic mean
  • Geometric mean
  • Webster method
  • Huntington-Hill method
  • Population paradox
  • Alabama paradox
  • Quota rule
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