I suggest to teach paragraph writing at the beginning of the year. This way students will have a good foundation of complete sentences and paragraph form when writing in journals, reading responses and essays.
1. Subjects and Predicates. Remind students that the subject of the sentence is the “who” or “what” the sentence is about. It should be a noun (person, place, or thing). The predicate is what the subject is or what it is doing. It should be a verb (action or linking). You may also go into dividing the complete subject and complete predicate by dividing the sentences. The group of words that go along with the subject is the complete subject and the group of words that go along with the predicate is the complete predicate. Make sure to point out that a complete sentence must have a subject and a predicate.
After the lesson, students should add the title and standard in their notebooks. Then have students create their own fragments and exchange with their partner who will make them complete. Come back to the whole group to share some examples. As a final practice, hand out an independent printable.
3. Complete Sentences: Have an assessment on complete sentences.
4. Run-On Sentences: Use the same method as above. A run-on sentence is two complete sentences that run together. During notebooking, ask students to write run-on sentences that their partner will have to correct.