These activities teach the the correct use of pronouns and irregular verbs; the formation of possessives, plurals, and contractions; and proper punctuation. The activities also focus students' attention on avoiding ambiguous modifiers, double negatives, sentence fragments, run-ons, and passive voice in their writing. Activities on dealing with tricky words focus on lie/lay, your/you're, its/it's, there/their/they're, and more.