This complete sentence activity is a hands-on sentence sort . Once students sort the sentences, they write complete sentences. Differentiation is embedded. This can be used for a center to get primary students to recognize the difference between a complete and incomplete sentence. There are 18 colorful cards depicting incomplete sentences as well as 18 cards that are complete sentences. Headings are also included. Students sort the cards under the appropriate heading. Also included is differentiated student response sheets.