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McGraw Hill
Glencoe: Writer's Choice: Grade 6 Proofreading Practice
This site offers two proofreading exercises in which students proofread for errors in spelling, capitalization, punctuation, and usage, and then retype passages correctly. When finished they click Answers for feedback.
University of Glasgow
University of Glasgow: Critical Reviews
This site is designed to be used by psychology students at the university level, but it provides helpful instruction for anyone writing critical reviews of non-fiction. Instruction includes everything from how to be critical to...
Other
Science Fiction Writer: Robert J. Sawyer: "On Writing": Word Processing Tricks
Science fiction writer Robert J. Sawyer shares his word processing tricks and tools for proofreading and editing a manuscript. CCSS.ELA-Literacy.WHST.6-8.6 Use technology to produce and publish writing