Writing Program Terminology Topic Sentence — first sentence in a body paragraph; provides subject and commentary (an opinion about the subject); main idea for the paragraph; o Thesis — sentence with a subject and an opinion that drives the essay; what the essay is about; in the one paragraph essay only, it is identical to the topic sentence and the two terms may be interchanged. Concrete Details (CD) — specific details that form the core of the body paragraphs; specific facts, examples, support, proof, a text passage, evidence, etcetera; never an opinion or a question. Commentary (CM) — opinion; including insight, analysis, interpretation, feelings, explanation, etcetera Chunk — a sub-group within a paragraph consisting of sentences of concrete detail and commentary expressing a unified idea about the topic; the smallest unified group of thoughts you can write. Ratio — the proportion of CDs and CMs used in a chunk; in Language Arts, this is 1 CD to 2 CMs, 1:2. Weaving — blending CDs and CMs within the same sentence; a closing sentence may include weaving. [Weaving is to be avoided otherwise, until you have mastery of the difference between CD and CM, usually discouraged until later in the 10th grade year, think Term B.] Closing Sentence — last sentence in a body paragraph, pulls together your support for your topic sentence; restates the topic as a conclusion based on the evidence and argument from the chunks of CD and CM in this paragraph 8 part paragraph – a paragraph of two chunks in a ratio of 1CD:2CM; it begins with a topic sentence (TS), continues with two chunks, and ends with a closing sentence (CS); the pattern is TS CD CM CM CD CM CM CS.