Brain Pop - Cartoons that teach cool stuff!
World Book Encyclopedia - Embrace your inner-nerd; browse an encyclopedia with article about almost anything!
TweenTribune from The Smithsonian - So much trivia knowledge about so many topics!
National Zoo Animal Cams - Naked Mole Rats, Pandas, Lions, Elephants!
Scratch from MIT - Program your own stories, games, and animations
iCivics Games - Learning history can be fun!
Women of Achievement from Chelsea House Biographies