Fun games site for grades K-5 has lots of learning choices.
A bounty of fun crafts for kids, but some iffy ads.
YouTube-like site for kids is good for play and discovery.
Animated educational content for kids to explore, for a fee.
This homework helper website ups the fun quotient for kids ranging from kindergarten to sixth grade.
PBS puts preschool shows online. (Take that, Hulu.)
A world of exploration awaits. This site's emphasis on collaboration helps kids work together to solve problems.