Smokey the Bear http://www.smokeybear.com/
United States Map Game http://www.sheppardsoftware.com/
National Geographic for Kids http://nationalgeographic.com/kids
Fun Brain http://funbrain.com/kidscenter.html
Primary Games http://primarygames.com/seasons/fall/fall_fun.htm
-ed and -ing endings http://www.scholastic.com/kids/homework/grammar.htm
The First Grade Backpack http://www.geocities.com/EnchantedForest/Tower/1217/reading.html
Starfall Reading http://www.starfall.com
National Wildlife Federation http://www.nwf.org
Kidzone Fun Facts http://www.kidzone.ws/