Cyberkids-games, creativity activities, student publishing, etc.
http://www.cyberkids.com  

Education:
Smithsonian Museum for Students-wide scope, interesting topics
http://www.smithsonianeducation.org/students/index.html  

Xpeditions (National Geographic site for education) www.nationalgeographic.com/xpeditions  

History:
American Memory: Historical Collections-a very rich site for history buffs, many very detailed resources: http://memory.loc.gov  

LearningNetwork, On This Day-New York Times-what has happened on this date
http://www.nytimes.com/learning/general/onthisday  

My History is America’s History-practical steps on saving history
http://www.pueblo.gsa.gov/cic_text/misc/my-history-p/my-hist.htm  

The Learning Page-designed for teachers, but lots of resources from the Library of Congress, rated in top 101 best websites.
http://lcweb2.loc.gov/ammem/ndlpedu/index.html  

National Park Service Museum Exhibits-visionaries, American Revolution, Civil War, Paleontology, American Southwest, American Heritage, Museum Techniques, NPS Web Museum links:
http://www.cr.nps.gov/museum/exhibits/index.html  

Home-schooling:
Free Firewood (curriculum materials). This includes resources for learning foreign languages and resources for home-schooling.
http://www.ignitethefire.com/freefirewood.html 

Math:
Mathematics Education at Northern Kentucky University-great math resources
http://www.nku.edu/~mathed/gifted.html  

Math Forum-great math resource: http://mathforum.org  

ShowMe Center- emphasis on middle school math
http://www.showmecenter.missouri.edu  

Music:
Childrens’ Music Workshop’s Music Education Online: www.childrensmusicworkshop.com  

Penpals:
International Email Classroom Connections: http://www.iecc.org  is for finding pen pals.
                                                                                                                                                  Scholarships: Harvard is offering free tuition for families making less than $40,000 a year and whose children are gifted and meet requirements. Visit Harvard's financial aid website at: http://fao.fas.harvard.edu/ or call the school's financial aid office at . The application date deadline is Jan. 1st.

Science:
Eisenhower National Commission (curriculum resources for math and science, but unfortunately is no longer government funded. It is now a subscription service.) www.goENC.com   

Exploring the Solar System
http://www.nytimes.com/library/national/science/solar-index.html  

Hello, Dolly-a webquest on cloning:http://www.powayschools.com/projects/dolly/  

Kid Source-incredible listing and rating of articles from many resources on a multitude of topics. http://www.kidsource.com/kidsource/pages/ed.gifted.html