(Sample link) White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
(Sample link) National Geographic for Kids http://www.nationalgeographic.com/kids/
(Sample link) Fun activities - by girls....for girls. http://www.missoandfriends.com/
Reading textbook Houghton Mifflin Grade 4 http://www.houghtinmifflin.com
Education Place http://www.eduplace.com/kids
http://www.sf.aw.com
Book Adventure http://www.bookadventure.org
Science http://www.harcourtschool.com