Cool Math for Kids http://www.coolmath4kids.com
edhelper - a huge help http://www.edhelper.com
enchanted learning - a huge help for any subject http://www.enchantedlearning.com
Reading Series McGraw-Hill http://www.mhschool.com/reading
fun brain activities http://www.funbrain.com/fract/index.html
units and themes http://trackstar.hprtec.org/
google http://www.google.com
growing wheat in Kansas http://www.wheatmania.com
Wacky World News and others http://www.timbuktoad.com
FEMA http://www.fema.gov/kids
a roots dictionary! Neat! http://www.quickreference.com
READ, WRITE AND THINK http://www.readwritethink.org
It's a dictionary! http://www.wordcentral.com
Great site for American History information. Click on the American History book. http://www.scholastic.com/profbooks/easyinternet/index.htm
http://www.sadlier-oxford.com/math/mc_minutes.cfm?grade=4&sp=student