Primary Resources
Primary Resources: Tally and Bar Charts
Lots of good materials for teaching about tally marks and bar graphs.
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.
Scholastic
Scholastic: Max's Math Adventures: A Hairy Situation
Help Max make a bar graph to show the hair colors of his classmates. Teachers will appreciate the activities with bar graphs in the extra challenges. Use the teacher's guide to create a fun and engaging lesson.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Bar Graph
Find a quick, concise explanation of a bar graph. An example is given.
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.