There are several ways to organize an essay. The basic idea is that there should be an introduction, a body section, and a conclusion. 

Introduction

Two paragraphs. In the first paragraph, write the summary of the article you are engaging, e.g. Carr, Goetz, etc. In the second paragraph, explain whether you agree, disagree, or take some middle position. I realize that introductions are often assigned as a single paragraph. This is fine in many cases. The reason that this assignment asks for two paragraphs  is twofold. First, it makes sense in terms of the work the paper does, insofar as this will give enough space to lay out the summary in the first paragraph and then the agree/disagree in the second paragraph. Second, I want you to get into the habit of thinking about parts of papers as sections rather than a set number of paragraphs. Depending on the length of a given assignment, the length of the introductory section may well change.  

Body

The best way to think about this part of the essay is that you want to bring your reader through the evidence in a logical way. This may be accomplished by dividing the body paragraphs into sections, for example, three sections where each one explains a part of the evidence and then the paragraphs within each section explain that section's component parts. There are no set number of sections or paragraphs. Make sure to give each paragraph a topic sentence; in other words, the first sentence of each body paragraph should announce the point that paragraph is making. It is generally best to have 1-3 pieces of evidence per paragraph. Use MLA style to cite the sources.

Conclusion 

There are two options for the conclusion. The first is to summarize the paper and re-explain the main point in light of the evidence presented. The second option is to open the paper up to a wider discussion about the topic . If the essay is pretty straightforward in terms of the logical progression of the paragraphs, it is a good idea to loosen up the conclusion by using the second option. If the essay takes a series of logical steps that could use clarification, then the tighter, more summary version of the conclusion would be best. The conclusion should be one paragraph.