It gives students an example of the sort of thing I want, plus some commentary (in italics) about what I’m expecting in each section. I sometimes change the particular example given, in order to encourage them to think about particular kinds of projects. For instance, the example provided here was used in a Leadership Communication course. I’ve used the same format, but a different research project example, for a course on Organisational Communication Technology.
Feel free to adapt it to your purposes.