This master thesis presents reflections on teaching-learning aspects of design processes, specifically processes concerning the development of projects, as a contribution to the achievement of social-emotional learning. A type of learning required to deal with the complexity of contemporaneity. The research is based on theories, concepts and thoughts like Edgar Morin s paradigm of complexity; the reflective-practice of Donald Schön; and learning through projects, by Fernando Hernández, among others. It points out aspects of Design as a possibility to transcend the frontiers of knowledge (disciplines) and to favor the development of social-emotional competences - including the abilities to deal with one s emotions; to relate to others; and to manage life goals in a context of change and interaction. It discusses the role of design in elementary education, based on data collected from professionals of the educational field, who have experience in teaching-learning practice through projects. Based on the collected data, it proposes a reflection about the learning experiences possibilities in elementary school for a social-emotional learning, from the perspective of a reflective design.