Search engines & directories that are appropriate for kids:

The Henderson Gleaner

http://ushistoryimages.com/ (A great place to find photos for research projects like PowerPoint presentations.  Native Americans are searchable by TRIBE.)

http://pics4learning.com/?search=cat&query=Native+American&sfield=1&sorder=desc&viewmode=2&page=1&mult=1 (More Native American photos.)

http://www.hardin.k12.ky.us/creekside/research.htm (Animal Research Sites)

http://www.awesomelibrary.org/homework.html

http://bensguide.gpo.gov/subject.html

www.askkids.com

www.kidsclick.org

www.kids.yahoo.com

www.SweetSearch.com