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
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