Mysteries of the U.S. Pyramids

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Students construct and interpret population pyramids (age-sex distribution charts) and discuss differences in population characteristics at different points in U.S. history and make projections for the future.

Students will be able to:

  • Calculate percentages using raw numbers for each age/sex group in a given population.
  • Construct a population age/sex distribution graph for one point in U.S. history.
  • Make connections between the shape of a population pyramid graph and factors that may have affected U.S. population patterns at different time periods.

This lesson is 1 of 14 in a resources packet focusing on U.S. demographics, society and environment. Download free here:

Lesson Plan Resources

Lesson tags: 
Advanced Placement (AP)
International Baccalaureate (IB)
Creative Commons License: 
Attribution Non-commercial NoDerivative CC (BY-NC-ND)