This is the thirteenth of 15 one-week SAT Prep units perfect for middle and high school students. Each unit includes: 13 vocabulary words based upon 4 Latin & Greek roots and a focused SAT grammar topic with several worksheets and guided notes. Each unit culminates with a practice quiz and a final quiz. The units are set up to be taught for three days, a practice quiz on day four, and a quiz on day five. Unit 13 covers punctuating Interrupters: Vocatives/Direct Address, Appositives, and Parenthetical Phrases. Answer keys included for each worksheet, practice quiz, and final quiz. You will love these!