The aim of this research is to understand the construction process of knowledge developed by people who catch recyclable waste material, also known as either waste pickers or collectors, organized in Cooperatives and advised by a Social Incubation Project at the Federal University of Goiás, from the tension between scientific and common knowledge. Concerning to the methodological aspects, the research has a qualitative approach and regarding the goals, it is characterized as descriptive – exploratory. The data were collected through participant observation. Through the obtained data, it is considered that the construction of knowledge of those waste pickers inserted in the social incubation context happens through some meaningful interactio...