Kids' Pages is put out by the National Institute of Environmental Health Sciences. This is terrific for young children with games, coloring on and off line, stories, songs, brain-teasers, and much more. Learning Kingdom gives you math shortcuts, this day in history information, a new word a day, and much more. Learning Shortcuts brings you practice for all the curriculum areas. The site takes a long time to initially load, but it is more than worth the wait.
Every area is addressed.
Online Activities for Kids provides a great resource for reinforcement in math, language skills, and word problems. Popular Songs in American History is an excellent resource for students and teachers who are interested in the part music has played throughout our history. Listen to the music while you read the lyrics and learn about its place in our heritage. Work through a TrackStar unit to learn about a variety of topics. Weekly Reader provides great resources for students, teachers, and parents.