The rapid changes that affect every social sector, and education in particular, leads to the need for evolution of the educational system as well as of teachers. In this context, teacher training and retraining continues to be a topical theme for the scientific community. At the same time, the nature of learning and the pathways in which it can be achieved for those involved in learning or social interaction procedures is a topic that continues to be a concern of educational research. Based on the above, this paper very briefly presents the theory of Papert's Constructionism, focuses mainly on the social aspect of Constructionism and briefly presents the results of this approach, in the learning process. Subsequently, the relevance of this theory to learning environments, and more specifically to Micro-teaching, which is applied in university departments of Teacher Education, is presented. The research was carried out by means of a literature review, while specific criteria for literature investigation were used and a specific process of searching mainly international sources was employed. Finally, a conclusion is drawn on how the practice of microteaching can be used to approach the learning of teacher candidates in the light of Constructionism.