Using the four-square writing templates are a great place to start teaching sentence formation. Students are given a topic and then they continue to brainstorm what that topic is, has, can, and makes them feel like.
Is use the templates with my students to brainstorm ideas together and then model how to write a complete sentence. After modeling, I give my students time to come up with their own ideas and sentences. I only ask my students to write one sentence, but they love writing so much that they often challenge themselves to write more than one.
I hope your students enjoy these writing templates!