spreadsheets and their use in the classroom

This is a great website for an activity on spreadsheets in the classroom. It involves an existing spreadsheet that can be used to extrapolate data and use that for higher level thinking skills. It's also a great motivator for students around the forth grade as they seem to have an innate interest in trivial facts about the presidents.
http://library.thinkquest.org/J0110054/Presidents.html

The next one is a consumer economic spreadsheet that also works on math skills. It involves a budget of imaginary money and a shopping spree. Columns are used for the items purchased, the cost and the quantity. There are two options for either an existing spreadsheet or one that the students create.

http://www.ncwiseowl.org/kscope/techknowpark/FreeFall/ShoppingSpree.html

I've discovered a great spreadsheet for tabulating and synthesizing the data on weather patterns. Then there's graphing options also in connection with it

http://standards.nctm.org/document/eexamples/chap5/5.5/index.html

All these spreadsheets can be used in the classroom with the right implementation. Clearly spreadsheets can be an outstanding teaching and learning tool.