National Security Agency
Line Graphs: Gone Graphing
Practice graphing and interpreting data on line graphs with 36 pages of math activities. With rationale, worksheets, and assessment suggestions, the resource is a great addition to any graphing unit.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Reading Graphs
A good introduction to reading bar, line, and double line graphs, and drawing and reading Venn diagrams. Contains definitions and examples of these types of charts and graphs as well as practice exercises that ask you to answer questions...