http://www.factmonster.com/ Fact Monster from Information Please is the tool to use for younger students.The Reference Desk on this site features a layout that is designed for easy fact-finding and includes timelines and an almanac, atlas, dictionary, and encyclopedia, as well as a Homework Center. Students can also search by visually identified topics or by typing in keywords. Check out fun features such as Biographies of the Presidents, the Geography Hall of Fame, and the Tallest Buildings Slideshow.