Investigating Population Changes

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Students will analyze graphs showing how three countries' populations have aged over 70 years.

Credit to Mike Saltz for the idea.


  1. First, students notice changes in the age of the United States' population from 1950 to 2020.
  2. Next, they look at the US, Japan, and Afghanistan's age graphs together, finding similarities and differences.
  3. Finally, they consider what unique needs each population would have in 2020 and create a business idea to serve that need.


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