Activity
National Council of Teachers of Mathematics

The Math Forum: How to Make a Bar Graph

For Students 9th - 10th
Site contains specific directions for making bar graphs using a Claris Works spreadsheet file.
Lesson Plan
Primary Resources

Primary Resources: Tally and Bar Charts

For Teachers 3rd - 5th Standards
Lots of good materials for teaching about tally marks and bar graphs.
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.
Lesson Plan
Better Lesson

Better Lesson: Graphing Our Snack Mix: Review of Graphing

For Teachers 2nd Standards
Second graders review how to make bar graphs, line plots, and pictographs by tallying the contents of snack mix and building graphs to show their data.
Activity
National Council of Teachers of Mathematics

Nctm: Illuminations: Bar Grapher

For Students 3rd - 8th Standards
A computer applet that will draw any bar graph with student's data input.
Website
Digital History

Digital History: British Mercantilism and the Cost of Empire [Pdf]

For Students 9th - 10th
Learn about the theory of mercantilism and how it affected the economies of the New England, Middle, and Southern colonies. Practice making a bar graph showing the value of exports to and imports from England between 1700 and 1774 with...
Unit Plan
PBS

Pbs: The Lowdown: Living Wages in Ca: Ratio and Rate in the Real World

For Students 6th - 8th
In this KQED infographic, find out how much an adult in different-sized households needs to make to pay for basic monthly living expenses. In the accompanying classroom activity, students solve real-life problems involving rate and ratio...