The process of construction of competencies and specifically of mathematical competencies in the rural area requires a great deal of effort both for the student and for the teacher due to the many characteristics of the context, the interest in promoting the learning of mathematics in students of new schools. The fundamental objective of the research is to understand the impact of a socio-constructivist approach on the acquisition of mathematical competencies in third and fifth grades of primary school in multigrade groups in the rural sector. | Impact of the socio-constructivist approach for the acquisition of mathematical competence in third and fifth grade elementary students