Kids InfoBits (http://infotrac.galegroup.com/itweb/?db=ITKE)
This is a terrific online database specifically for elementary students, with easy access to over 100 periodicals, links to age-appropriate web resources, large media collections, and much more!
Quintura for Kids (http://www.kids.quintura.com)
A relatively new and promising kids search engine, with an unusual interface.
This one is allows students to search through a large directory of sites without advertisements!
Yahoo Kids (http://kids.yahoo.com/)
One of the most popular "kid" search engines.
Ask Jeeves for Kids (http://www.ajkids.com)
A great way to access high quality sites, simply type a question. Also includes "Ask Jeeves for Teachers".
Kid's Click (http://sunsite.Berkeley.EDU/KidsClick!)
A web search for kids, by librarians. Kids (or teachers) can search or browse by subject area.
Awesome Library (http://www.awesomelibrary.org)
A collection of high-quality web resources that students can search.
Kids Tools for Searching the Internet (http://www.rcls.org/ksearch.htm)
A group of kid-friendly search tools, all on one page.
Ivy's Search Enginer Resources for Kids (http://ivyjoy.com/rayne/kidssearch.html)
Another group of kid-friendly search tools on one page.