Department of Defense
Do Dea: Spreadsheet Software: M5: L3: Customization: Modifying a Worksheet
In Module 5 Lesson 3 of this course on spreadsheets, students learn how to work with two or more spreadsheet workbooks at the same time where they have related data and how to create different customized views. Includes slideshow tutorials.
National Council of Teachers of Mathematics
The Math Forum: Spreadsheet Basics
A simple introduction on how to create a spreadsheet.