Student Resource Links
Fact Monster
Atlas, Dictionary, News, Subjects, Timelines, History, Language,
Caution: Christian facts are "iffy"
Dictionary.com 
Dictionary, Thesaurus, and more
Heinel's Dictionary
A good online student dictionary
with sample sentences in some words
Cambridge Dictionary
A good online student dictionary
with sample sentences in some words
Choose Your Online Dictionary
A bunch of links to other online dictionaries and thesauri
Rhyme Zone
Rhyming Dictionary