Teacher practice: The teaching of fractions in a primary classroom through problem situations

This document seeks to identify the elements in teachers' practice that allow generating a discussion in the classroom about the concept of fraction and provide learning opportunities to students. To this end, we start from two situations-problems generated by the teacher, one of them is the introduction of the concept and in the other, which corresponds to a later stage of the teaching-learning process, the students have to handle the concepts learned. The research methodology used is qualitative, since it is based on a case study. The data were collected by recording two classroom sessions and the Knowledge Quartet (KQ) was used as a methodological framework, emphasizing its four dimensions: foundation, transformation, connection and contingency. Learning opportunities vary from one task to another. The first one, on being an introductory activity, is more related to connection, while, in the second, foundation and transformation have more weight. However, in both, contingency emerges as a key aspect to delve into the understanding of the concepts.