Rice University
Rice University: Cynthia Lanius: Let's Graph
An introduction to bar graphs, both vertical and horizontal in nature. The interactive aspect of this site allows students to change the values of the data - their favorite cafeteria foods - and then see how the graph is changed.
Curated OER
University of Texas: India: Religions
On this fascinating map of India from the Perry Castaneda Collection, you can read bar graphs that show the percentage of religions practiced in each state and union territory of India.