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.
abcteach
Abcteach: Farm Resources
[Free Registration/Login Required] This site provides several links to elementary information about farm resources for your classroom. You will find a venn diagram activity, a bar graph activity, a word search and more.