Activity
Math Is Fun

Math Is Fun: Definition of Bar Graph

For Students 3rd - 8th Standards
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.
Graphic
The Franklin Institute

Frankin Institute Online: Group Graphing

For Students 3rd - 8th Standards
This site from The Franklin Institute explores how to make a simple graph using a spreadsheet to portray survey data. It also gives a set of interesting sports-related web sites so that students can get statistical inforamtion.
Activity
Math Is Fun

Math Is Fun: Data Graphs

For Students 3rd - 8th Standards
Create and customize a bar graph, line graph, or pie chart based on a set of data and print it out.
Activity
The Math League

The Math League: Using Data and Statistics: Pie Charts

For Students 3rd - 8th Standards
This introductory tutorial about statistical graphing with four examples of how pie charts (circle graphs) are constructed and read.
Lesson Plan
PBS

Pbs: Mathline Creature Feature Lesson Plan [Pdf]

For Teachers 3rd - 5th
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....
Activity
The Math League

The Math League: Ratio and Proportion

For Students 3rd - 8th Standards
This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.