US Congress Is No Longer Getting Older: Average age by Congressional body
graph from USAFacts; slow reveal by Jenna Laib
Type of Graph: line graph
Purpose
This slow reveal is designed to support analysis and discussion of both the data and the design choices. The questions in the slide deck invite learners to identify trends, estimate values, examine the axes, make connections between civics and the choices made in representing the data, and consider implications.
About This Graph
This visualization is not provided for reuse or redistribution. Readers and educators are encouraged to view the original visualization in its published context.
Data Visualization Sources:
USAFacts Team. “Is Congress Representative of the American People?” USAFacts, 15 Sept. 2026.
Accessed at https://usafacts.org/articles/is-congress-representative-of-the-american-people/
Data Sources:
Manning, Jennifer E. “Membership of the 119th Congress: A Profile.” CRS Report R48535. Washington: Congressional Research Service, 4 Aug. 2025.
Accessed at: https://www.congress.gov/crs-product/R48535
In The Classroom
There are many different mathematical connections that can be made to this data and data visualization.
Potential Math Content: line graph, estimating values, scale along the x-axis, scale along the y-axis, slope, distance between lines
Potential Content Connections: US government, civics, American politics
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