Literate and Illiterate World Population, 1800 – 2016
graph from Max Roser/Our World in Data; slow reveal by Jenna Laib (@JennaLaib)
(Slide deck includes notes and questions to elicit discourse)
Type of Graph: stacked area graph
Source: Roser, Max and Esteban Ortiz-Ospina. “Literacy.” Our World in Data: Originally published in 2013; last revision September 20, 2018.

Paired Text: Roser, Max. “Proof that life is getting better for humanity, in 5 charts.” Vox.com: December 23, 2016.
Potential Math Content: stacked area graphs, slope, area under a curve, change, percentages
Potential Content Connections: world history, education, social policy, literacy