Texas Instruments
Texas Instruments: Beverage Tests
In this activity, students determine the pH of liquid samples. They get familiar with the pH scale, create graphs comparing pH levels, and compare data displayed as a scatter plot, a boxplot, a histogram, and a bar graph.
CK-12 Foundation
Ck 12: Physical Science: Scientific Graphing
[Free Registration/Login may be required to access all resource tools.] Usefulness and types of graphs.