Paragraph 1: Introduction
The principle purpose of the introduction is to present your position (this is also known as the "thesis" or "argument") on the issue at hand but effective introductory paragraphs are so much more than that
Paragraph 2: Body 1
Paragraph 3: Body 2
Paragraph 4: Body 3 (optional)
The middle paragraphs of the essay are collectively known as the body paragraphs and, as alluded to above, the main purpose of a body paragraph is to spell out in detail the examples that support your thesis.
For the first body paragraph you should use your strongest argument or most significant example unless some other more obvious beginning point (as in the case of chronological explanations) is required. The first sentence of this paragraph should be the topic sentence of the paragraph that directly relates to the examples listed in the mini-outline of introductory paragraph.
A one sentence body paragraph that simply cites the example of "George Washington" or "LeBron James" is not enough, however. No, following this an effective essay will follow up on this topic sentence by explaining to the reader, in detail, who or what an example is and, more importantly, why that example is relevant.
Paragraph 5: Conclusion
Although the conclusion paragraph comes at the end of your essay it should not be seen as an afterthought. As the final paragraph is represents your last chance to make your case and, as such, should follow an extremely rigid format.
One way to think of the conclusion is, paradoxically, as a second introduction because it does in fact contain many of the same features. While it does not need to be too long – four well-crafted sentence should be enough – it can make or break and essay.