Gapminder for Teachers. There is even a desktop version so that you do not have to be online to use Gapminder. Gapminder has also included some teaching guides such as the one called 200 Years that Changed the World.
This site is simply filled with factual information for use with your classes. This site is not just just for math and geography teachers! All students can benefit from learning to use this site to access statistics on all kinds of information on health, wealth, HIV, human development, money, reducing childhood mortality, income distributions, marriage, employment rates and the list goes on and on. Teachers, check it out and Mind the Gap at www.gapminder.org today!