A brief overview of what the article is about and why the authors did the experiment.
Gives you the motivation and importance of the study, includes backgraound information.
Also called analysis or conclusions - learn the reasons for the conclusions. This is where you test if you agree with the logic of the conclusions. Using this and the abstract you can determine if the article is relevant to your research.
How the experiment was carried out. You just need to see the general method and processes used. There is no need to understand it in detail at this point.
This is the raw data from the experiment. There will be charts and tables. Understanding the charts and tables is very important for understanding the paper.
Articles in scientific journals are called "primary literature". They report the actual study or experiment, the results and conclusions from those results. In the sciences, they usually have been "peer reviewed" - that is deemed worthy of publication by a committee of scientists in the field.
You approach reading an article in a science research journal with a purpose and a plan. This process is outlined in the, How to Read a Scientific Paper tutorial from Purdue University linked below.
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