In this activity, students investigate population projections from 1990-2100 using data from the U.S. Census Bureau Web. Using the five specific population pyramids, students investigate population projection data for the United States over a 110-year period. They examine how the population data is distributed over time and explain what factors might contribute to these trends. An activity sheet and thoughtful questions, included in the lesson plan, guide the class investigation.

- Subject:
- Mathematics
- Material Type:
- Interactive
- Lesson Plan
- Provider:
- National Council of Teachers of Mathematics
- Provider Set:
- Illuminations