This empirical study, conducted in a Canadian university, argues that the objective knowledge growth framework (OKGF), a self-directed reflective approach, can contribute to the professional development of pre-service teachers in dealing with the complexities of teaching. The paper seeks to answer the following research question: How do pre-service teachers use the OKGF as a self-directed professional development tool to solve teaching practice issues that arise during their practicum? It offers a critical analysis of 24 pre-service teachers' use of the OKGF, as well as the trends in their application and interpretation of the OKGF in solving issues of teaching practice during practicum.