Topic Sentences are the first sentence of your body paragraph.
Their function is to introduce the reader to the purpose and topic of the paragraph.
Topic sentences are the second most important sentences of the paper.
Like the thesis statement, it helps to generate the focus that many student papers lack.
It should model the wording and formula of the thesis statement.
THESIS STATEMENT FORMULA: purpose + topics = thesis
TOPIC SENTENCE FORMULA: purpose + topic = topic sentence