These movies are wmv's depicting spreadsheets as tools. 
The files are quite large.  You might want to save them on to your hard drive by Right clicking on the link and Save Target as..., to tell the computer where to save it.

Movies available

1. Trendline -  This movie shows how to cut data from an exam data set, paste it into a new spreadsheet, graph it, add a trendline to the graph and get the equation parameters using the Excel Spreadsheet.
2. Non-Linear Regression - This movie shows how to work with data that come from more complex equations (e.g. bi-exponential equations) by using the Solver function in the Excel Spreadsheet.