NOTE: Check out Microsoft Excel Functions Workbook, Volume 1! This is an Excel 97-2003 workbook collection of 15 project-based, problem solving spreadsheet exercises (with complete keys - SEE PREVIEW) that help students learn to use the following powerful Microsoft Excel functions: SUM AVERAGE IF COUNTIF COUNTBLANK Each exercise generally takes between 1 and 2 full class periods to complete. I take 10-15 minutes to explain the problem, the deliverable, and the tools, and then let the students w