The study is a qualitative and collaborative research that aims to understand the construction process of concepts of mathematics students through research activities, as the research indicates that these activities mobilize students to learn according to their age and maturity. The theoretical framework was Piaget's theory in relation to concepts of equilibration and reflective abstraction. The method consisted of observation of classes and investigative activities and its resolutions collectively done by six students from the 6th grade of a public school in Porto Alegre, in 2013. The data were organized into categories relating to interpretation and argument resolution, articulating the elements of investigative scenario with Piaget's Clinical Method. It stands out as a result of research, the understanding of how students construct the concept of multiple divisors of a natural number in these classes.
activities; concepts; action; abstraction; equilibration