What is a paragraph? A paragraph is a short piece of writing that presents a main point and supports it. A paragraph consists of a topic sentence that states your main point, body sentences that support your main point, and a concluding sentence that reminds readers of your main point and makes an observation.
What are unity and coherence? Unity means that all sentences in a paragraph relate to your topic sentence, and coherence means that you move readers smoothly from one idea to the next. Transitions are words that aid coherence. Some transitions are before/after; first/second; near/far; and one reason/another reason.