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Capital Community College Foundation
Guide to Grammar and Writing: Notorious Confusables
Great site! Offers student tons of confusables! Also offers quizzes and a pull-down menu for one "confusable" at a time. CCSS.ELA-Literacy.CCRA.L.2, L.11-12.2b Spelling, L.11-12.4 Word Meanings
Online Writing Lab at Purdue University
Purdue University Owl: Editing and Proofreading Strategies for Revision
This lesson contains strategies for proofreading your assignments. Use the links on the left for a step-by-step method for proofreading and editing for grammar and mechanics. CCSS.ELA-Literacy.CCRA.W.5
Harvard University
Harvard Writing Center: Tips on Grammar, Punctuation and Style
Rather than lists of rules, this site provides practical advice on the use of commas, semicolons, dashes, hyphens, abbreviations, acronyms, split infinitives, "this," "that," italics, and underlining. CCSS.ELA-Literacy.CCRA.L.2
Grammarly
Grammarly Handbook: Informalities
A list of style techniques (with examples) used to create an informal tone in a written piece.