Primary Resources
Primary Resources: Tally and Bar Charts
Lots of good materials for teaching about tally marks and bar graphs.
University of Cambridge
University of Cambridge: Nrich: The Pet Graph
On this one-page website, sharpen your logic and graph reading skills by figuring out which pet goes with each bar on the graph. The solution is available to double check your own solution.
Education Place
Houghton Mifflin: Eduplace: Make a Living Bar Graph
Student use simple data to line up in a living bar graph activity when they respond to simple questions in this lesson plan. They physically and visually represent the data. CCSS.Math.Content.3.MD.B.3 Draw a scaled picture graph and a...
University of Illinois
University of Illinois: Bar Graphs
Two bar graph examples are shown and explained at this website. You can learn what kind of data is best represented using a bar graph.