Social Studies and Language Arts Online books http://www.pearsonsuccessnet.com
National Geographic for Kids http://www.nationalgeographic.com/kids/
http://kidinfo.com
http://www.vocabulary.com
http://poetry4kids.com
White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
Under Reading Programs click on Reading Counts Put your lexile range in Intermediate Library catalog