A common method for writing an expository essay is the five-paragraph approach. This is, however, by no means the only formula for writing such essays. If it sounds straightforward, that is because it is; in fact, the method consists of:
The introductory paragraph should also include the thesis statement, a kind of mini-outline for the essay. This is where the writer grabs the reader's attention. It tells the reader what the paper is about. The last sentence of this paragraph must also include a transitional "hook" which moves the reader to the first paragraph of the body of the essay.
Developing a 5 paragraph essay: preparation and writing
How to write a 5 paragraph expository essay By Summer Schanuth and
Shelby Tucker Context-
Provide the information the reader will need to understand the topic.