Every morning, my students go to work as detectives to proofread what I call the Detective Sentence. A sentence containing errors is written on the board. On their own, students are to use proofreading marks to correct the sentence. As a class, we go over the sentence and the proofreading marks that should have been used to correct it. I always ask students what kind of sentence (declarative, exclamatory, imperative, interrogative) it is, as this is especially helpful when determining what kind of end mark is needed/works best in the sentence. These posters are on display in the classroom for students to reference. Posters contain the names of the four kinds of sentences, the end mark used in each kind of sentence, and an example sentence.