An excellent site for understanding and applying the ideal gas law. The combined and other variations of the ideal gas law are derived. There are sample application problems with an abbreviated method of solving the problems.

This site provides information on Histograms and Bar Graphs. It includes worksheets, key terms, and links to further information.

Lesson plan introduces students to stem-and-leaf plots. Many resources are available for student and teachers here.

This site deals with using a calculator to help solve and evaluate mathematical problems. This site provides a lengthy chart of basic operations performed by calculators, examples of problems to be solved using a calculator, as well as many other examples.