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English/Language Arts

Dictionaries:

Audio Webster Dictionary

Merriam Webster Dictionary

Rhyming Dictionary

Literature:

Falcone Education A great resource for children's and young adult literature.
Vandergrift English Help This site is helpful with Shakespearean literature.

Research:

MLA Citation Guide A Research Guide for Students.

Writing:

Exploring English Explore the parts of speech, sentences, style guidelines, usage, punctuation, spelling, and more.
Purdue University Online Writing Lab Offers a grammar hotline and a collection of reference materials.