This is a simple cooperative learning activity. There are 24 cards with sentences requiring students to use commas in a series. All sentences are wrong. Give each student a card and have them mix around the room. They will find a partner. The partner tells them what is wrong with the sentence. Then their partner quizzes them. There's a lot you can do with these cards, but ultimately, I just couldn't find anything like this on here for free. I ate way too much king cake today and wanted to save you some trouble. This is in Word so you can add extra cards or edit as needed.