In design-based learning (DBL) projects, engineering students are to gather and apply knowledge while working on the design of artifacts, systems and innovative solutions in project settings. The characteristics of the projects, the design elements, and the role of the teacher are pivotal components within the DBL framework that foster students’ design problem-solving process. This article investigates the changes and effects of DBL characteristics on students in solving design problems. In addition, our study explores the effects of a professionalization program on DBL teachers and supervisors. We conducted a survey of teachers’ and students’ perceptions about DBL characteristics. We then observed teacher, supervisor, and student actions d...