"Can my conclusion just be one sentence?" This is a question that my freshmen would ask, repeatedly, until I gave them a recipe for an effective conclusion. Many times, students just need an idea of the general direction their conclusion should take. This handout can be used as a reminder, so when they ask that question, you can tell them to take out their Conclusion Handout.
When I color code my writing handouts for my students, I make the conclusion GREEN, as with the Thesis Statement/Topic Sentence handout, for the conclusion is simply addressing the ideas presented in those pieces of the paper, so they should definitely be connected.