(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/
McGraw-Hill Reading Series http://www.mhschool.com/reading
Reading enhancement http://www.starfall.com
Junie B. Jones http://www.randomhouse.com/kids/junieb/
Phonics http://www.phonicsworld.com