Methodology of Sociological Research Procedure: Didactics of a Research Project. The objective of this article is to present sociological research procedure, and, more concretely, to show that sociological investigation - even in its most technical aspects - is inseparable from theoretical considerations. The problems a researcher encounters in trying to link theoretical considerations with empirical operationalization are not really treated in sociological literature. The author presents and analyzes the three components of a problematic: the frame, the approach, the prospective. The research frame - and through it, the research object - has less sociological value the closer it is to common sense knowledge. An approach can by atemporal or chronological. A perspective is an individual researcher's theoretical position in which he expresses his scientific institutional identity. The author applies these ideas to an example of the study of social mobility.