Mathematical problem posing as the substantive formulation of
mathematical problems is an activity that lies at the heart of
mathematics. In recent years, research in mathematics education has
endeavored to gain insights into problem posing--conceptually as well as
empirically. In problem-posing research, there has been a focus on
analyzing products, that is, the posed problems. Insights into the
processes that lead to these products, however, have so far been
lacking. Within four journal articles, summarized in this cumulative
dissertation, the author attempts to contribute to the understanding of
problem-posing processes through conceptual considerations and empirical
investigations. The conceptual part consists of a conducted systematic
literature review to investigate problem-posing situations and
problem-posing activities. The studies in the empirical part deal with
the analyses of problem-posing processes of pre-service mathematics
teachers from a macroscopic and microscopic perspective. The aim is to
develop coherent and meaningful conceptual perspectives for analyzing
empirical observations of problem-posing processes.