Do your students struggle with the difference between plural and possessive nouns? This sort is designed to be an engaging way to help students practice differentiating between plural nouns, singular possessives, and plural possessives. It works well for small group review, whole class activities, or a center during your literacy block. Students will love the hands-on aspect, and you will love the meaningful reinforcement of this challenging skill. While using this center, students will be encouraged to have discussions about when to use that tricky apostrophe.