The Math League
The Math League: Using Data and Statistics: Pie Charts
This introductory tutorial about statistical graphing with four examples of how pie charts (circle graphs) are constructed and read.
Math Is Fun
Math Is Fun: Definition of Bar Graph
Get the definition for a bar graph. Then, select the link "here's more" and use the interactive graph to display data as a bar graph, line graph or pie chart. The finished graph may be printed.
Education Development Center
Tune in to Learning: Reading Charts and Graphs
Practice graph reading skills with these exercises and companion tutorials.
The Math League
The Math League: Ratio and Proportion
This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.
ClassFlow
Class Flow: Reading Circle Graphs
[Free Registration/Login Required] Students are asked to figure out the size of the shaded portions of a circle graph. They then complete a chart showing the fraction, decimal, and percentage equivalents.
PBS
Pbs: Mathline Creature Feature Lesson Plan [Pdf]
An interdisciplinary math, science, and language arts lesson that engages learners in an exploration of statistics. Through a study of various forest climates, students utilize data collection and analysis, classification, and graphing....
American Museum of Natural History
American Museum of Natural History: O Logy: The Tree of Life
Learn about the diversity of species on Earth by exploring a cladogram, a graph-like tree of life that illustrates relatedness among species. Includes instructions for reading cladograms and a pie chart that summarizes the percentages of...
US Geological Survey
Usgs: Water Science for Schools Uses of Saline Water
This U.S. Geological Survey website explains a variety of uses for saline water. Pie graphs and bar graphs are used to illustrate the various uses. Click Home to access the site in Spanish.