UPDATE: the URL has changed,
where you can take refresher courses for teachers online at your own pace from Algebra to Calculus. This is a quick and easy way to get some graduate credits and improve that FAS (Final Average Salary) for retirement!
This is a great opportunity to share the movie "A Beautiful Mind" about John Nash's Theorem which introduces the concept of Linear Programming for the first time. The movie shows how John Nash's discoveries were applied to the field of Econometrics many years later and even earned Dr. Nash a Nobel Prize!