Laboratory Reports

The introduction of your lab report is a chance for you to "hook" the reader and preview the important details you'll be talking about in the later sections of the paper. It's kind of like the first paragraph in a short story or the first act of a play.

While the abstract was a very short summary of the entire paper, the introduction will be a longer section with more detail. It could be anywhere from three or four paragraphs to a couple pages long, depending on the complexity of the topic and, of course, the requirements of your instructor.

Here are some tips for organizing your introduction:

1. Start off with a very broad introduction to the topic. For instance, let's say you are writing a lab report about an experiment where you tested the effect of temperature on the enzyme catalase. You should start the introduction by talking about what enzymes are and how they work.
2. Next, narrow down the introduction to talk more specifically about the topic you are investigating, and why the study you did was so important. In the catalase example, you should now talk specifically about what the catalase enzyme does, where it is found, how it works, and why it is important enzyme to study how temperature affects this enzyme.
3. The introduction should also include a literature review that discusses what is already known about the topic. This where you will summarize the research you have done about your topic. Make sure you properly cite all of the sources you used in your research.
4. Finally, state the purpose of the study, the hypothesis you tested in your study, and/or the question(s) you were trying to answer.

The introduction should not include details about the procedures you used in your study. Save these for the Materials and Methods section. You should also leave out the results, which will go in the Results section.