In this study, it is aimed to examine the mathematical conceptual skills of 48-72-month-old children attending pre-school education institutions providing a Montessori Approach and Ministry of National Education Pre-school Program (MoNE PSP). The study group consisted of 20 children, who were trained by the Montessori Approach, and 20 children, who continued to attend pre-school education institutions applying the MoNE PSP. The research was carried out in accordance with the state study design of the qualitative research methods, and the data of the study was collected by the structured observation method at the free play/individual work time in the learning centers of the children constituting the study group. A structured observation form was used as the data gathering tool, and mathematical concept skills such as counting, matching, grouping, comparison, positioning, measurement, pattern, part-whole, transactions and creating a graphic were included.  Research data were analyzed with descriptive analysis method, and the frequency and percentage values of the obtained data were calculated. As a result of the study, it was observed that the students trained with the Montessori Approach and MoNE PSP could not create graphics in both groups, while the rhythmic counting and patterning skills were the most observed skills in children. It has been determined that children trained with the Montessori Approach perform more studies, especially on matching, grouping, comparison/ranking, and part-whole skills, compared to the children trained with MoNE PSP. In the light of the results obtained in this research, it is suggested that the play materials that had to be in classes where MoNE PSP was applied should be standardized, and children should be able to get through these materials; also mathematics center should be established in the class level.

Education faces barriers all over the world, which sometimes makes it difficult to look after children’s rights and their individual development. Hence, society is clamoring for new practices, and different approaches are emerging, Montessori among them. Despite the fact that this approach was developed to attend to the poor strata, nowadays it is basically promoted by elitist sectors, though it can be perfectly applied as an education system for all children, regardless of their socio-economic and cultural backgrounds. This study analyzes the bases of Montessori pedagogy in a school from a low-to-middle-income country (LMIC), Burkina Faso, and another school in a high-income country (HIC), Spain. The study takes into account children, family, school environment and teacher training all of which contribute to children’s development.