Introduce your argument. Find a way to "hook" the reader and convince him of the importance and relevance of the topic of your work. Clearly state your argument and basic reasons for arguing your point. The last sentence of your introductory paragraph should concisely summarize the overview of your paper and the significance of your findings.
Present your research. Describe the methods of research and findings and explain why your research supports your argument. You are trying to convince the reader that the research you present is relevant to your final conclusion. Using a variety of sources will lend more credibility to your work than taking information from one source. Introduce expert testimony, statistics, hard facts and specific examples to strengthen your point.
Address the opposition. Part of displaying a convincing argument is being able to anticipate the opposing argument and find an argument against it. Research what opponents have to say about your argument and uncover research that will counter their position. Acknowledging the other side will make your argument appear stronger and more developed.
Conclude your argument. Provide a brief recap of the information presented in your paper, and how your research supported your original thesis from the introduction. The conclusion should cover the information provided in the introduction.
While you should avoid introducing new information in your conclusion, you can offer a fresh perspective on the topic, such as a proposed solution to a problem or an alternative theory to the origin of a problem.