Fact Monster's African Elephant encyclopedia article, short and sweet!  http://www.factmonster.com/ce6/sci/A0857952.html

Wikipedia's African Elephant article, longer and more detailed; a harder read.  http://en.wikipedia.org/wiki/African_elephant 

National Geographic for Kids has this great article about polar bears. Be sure to click the arrows to read the entire article.  http://kids.nationalgeographic.com/Animals/CreatureFeature/African-elephant 

The World Wildlife Fund's (WWF) page about African Elephants gives all sorts of useful information like their habitat, background, a physical description, and lots more.  http://www.panda.org/about_wwf/what_we_do/species/about_species/species_factsheets/elephants/african_elephants/index.cfm