A quiz, designed for business writers, that tests knowledge of words which are frequently misspelled. It includes questions about two words which are spelled differently in British spelling than in American spelling.

This site provides a grammar reference for students. The rules for using dashes, commas, semicolons, coordinating conjunctions, and conjunctive adverb are included. Topics including subject-verb agreement, how to proofread, and twelve...

This interactive site provides a site for students to enter text. Students can click a button to check their entered text for errors in spelling, punctuation, and grammar. A "deeper" search button with scan for plagiarized text.