There are many different types of papers students may be asked to write for classes. Before researching and writing your paper, make sure you know what type of paper your professor wants you to write. Are you doing a research paper for a science class? Are you writing a persuasive essay? Are you doing a critical analysis of a piece of literature? Is your paper part of a presentation of an invention or experiment? Take the time at the beginning of the project to make sure you understand what is expected.