Number of Rat Sightings in Selected Cities (Logarithmic Scale)
graph by the Economist; 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 examine trends, relationships, and possible interpretations. This graph uses a logarithmic scale to compare growth in the number of sightings of rats in Washington DC, Tokyo, New York, Boston, and Toronto.
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.
Original Visualization: The Economist, “A data-rich look at New York’s battle against rats.” The Economist: October 9, 2025.
Data Sources: Municipal data portals
Tokyo Metropolitan Government
In The Classroom
There are many different mathematical connections that can be made to this data and data visualization.
Potential Math Content: line graphs, multiplicative comparisons, log scales, estimating values, comparing values
Potential Content Connections: rats, urban problems, urban policy, international
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