The introduction is like a funnel,
from generic to specific.
Image by Clker, Pixabay
An introduction generally consists of three paragraphs containing:
The context and reason for the research. What is the current situation and what is the problem?
The relevance of your research. Why is this important?
The practical question and information questions that will provide the necessary information to answer it.
In the case of longer reports you can also provide:
a brief indication of your approach.
a reading guide, so the reader knows what to expect in the rest of the report and how these sections are connected.
In general, an introduction is shaped like a funnel, in which you start with more general information about the reason for your research (the problem), and then become more and more specific about what exactly you want to research and how.