mostly for elementary but middle school and even high school students can have fun playing these games. I tried "wacky web tales" and enjoyed reading what song/story was created when i wrote verbs, famous person, name of a friend, etc....
this website has simple, but fun games. Also, it has resources for teachers and you can save them to your Diigo account and print them out later(puzzles, word finds, charts, etc....).
this website is cool. elementary or secondary will enjoy educational games. I only tried a typing game under Language Arts. There's something for all teachers here (Math, Social Studies, Science, etc...).
Secondary Science teachers can use this webpage along with their lessons about DNA, the immune system, cells, etc.... I like the characters and the graphics they show.