http://www.biography.com/. This site provides a variety of exclusive biographies of people that can be viewed or read.
http://gardenofpraise.com/leaders.htm. A website dedicated to biographies of famous Americans throughout history. Students can play biography games about the individuals, including puzzles and riddles.
http://1000biographies.com/. Another website where students can research simple, easy to read, biographies of current people and historical people
http://www.ala.org/. The American Library Association has great websites for kids on biographies
http://www.pebblego.com. This site has biographies, as well as other information, that is easy to navigate and written in kid friendly language. Information also has an audio and video component that can be useful for students. This site does have a fee associated with it.
http://whitehouse.gov. This site has information about the office of president as well as information on each president.
http://www.americanpresidents.org/. This site has CSPAN's series of "Life Portraits" of each president.
http://www.pbs.org/wgbh/americanexperience/features/article-gallery/presidents-bios/