This particular product is an activity sheet to assist with students writing. It is intended for grades 2-6th grade. The activity sheet is a basic layout for students to jot down their Topic Sentence(T), their three supporting details (123), and last but not least their concluding sentence(C).
I use this with my students third through fifth grade as a way to get them to write out their sentences in an organized fashion. We go through copies and copies of these every time we write. It works well as a graphic organizer and or a rough draft of their writing.
If you would like more advanced detail writing check out Writing T123C Advanced.