Maps of the world according to statistics. i.e. maps comparing population between the world's countries. Some data is missing and it is a bit old in some cases. (At least newer than 2000)

A running record calculator. Won't help you count it or MSV it, but could be helpful.

If math is not your strong suit, or if you just want to save a couple of minutes.

A collection of public television segments for use in class. A variety of subjects and grades.

found via twitter @ShellTerrell

This app has lots of potential but if you're running windows 7 64-bit, it seems you should avoid this one.

This is a great website to find creative images. Many have some version of a creative commons license. WARNING: The website contains art of ALL kinds. I do not recommend searching the site while at school or telling your elementary school students about it.

An extreme case of developing 21st century skills.

Still a work in progress, but the idea is interesting.

Lots of good articles on school technology.