Language Arts

Sheppard Software: http://www.sheppardsoftware.com/web_games_vocab.htm

Spelling City:  www.spellingcity.com  (A great website to help with spelling)

Word Central:  www.wordcentral.com

Wacky Web Tales: http://www.eduplace.com/tales/ (mad lib website)

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Vocabulary Games: http://www.vocabulary.co.il/

Grammar Games:  http://www.goldridge08.com/grammar.htm