The question of the relations between generations in and out of the family’s sphere expanded these last years. This article is interested in the intergenerational relation in the urban public place. In this perspective, the author studied an educational process proposed to students in social work in their third year of undergraduate cursus. The key concepts used lean on the theoretical dimensions of generation/intergeneration and public place, as well as on the disciplinary aspects such as sociocultural community development. This analysis thus examined the passage which leads from the very abstract cursus engineering to practical applications. The actual apprenticeship of the students in this process was also taken into account. As result, we present the model of this praxis, the strengths and the weaknesses of this pedagogy which wants to bind theory and practice and the anchoring of this teaching in its wide institutional context.