This research seeks to understand the relationship between philosophy and the formation of concepts in childhood from the perspective of Matthew Lipman. As our own research in the area of philosophy of education, we pose the following question as a problem to be analyzed: how can philosophy contribute to the concept formation process in childhood according to Lipman? The development of this problem was organized in five stages. A first seeks to understand and deepen Lipman's conception of Philosophy for Children, (...) especially the idea of thinking skills and philosophical dialogue in the research community; the second stage consisted of planning philosophical practice with the children at school, in a class with 32 students from the 3rd year of elementary school in a public school in the city of Londrina / PR, in the period of one semester; the third was to carry out the classroom experience with the students and the teacher from the previous stages; the fourth step was the evaluation of the practice and the planning of the following classes after each meeting; and the fifth stage was concerned with the registration, analysis and systematization of the observed. In order to investigate the contribution of philosophy to the concept formation process in childhood, according to Lipman, part of the research methodology was qualitative, analyzing the concepts of philosophy, thinking and the research community of this philosopher. For this, his main works and those of his commentators were consulted. Action research procedures were also employed through the practice of students from Elementary School I, in order to carry out an experience of the analyzed concepts. As a result of the research, it is possible to highlight the fundamental role of Lipman’s Philosophy for Children in the formation of concepts, because, through philosophical practices, the children were more reflective in approaching concepts that in their daily lives could go unnoticed. The work of questioning and dialogue in the research community made it possible to highlight the difficulty of conceptualizing at the beginning of the work, the progress along their approach and the need to seek more in-depth answers. With that, it can be highlighted that the Philosophy classes contributed to such advances and that without them the skills would remain stagnant. This study is added to the philosophical educational movement of teaching philosophy from childhood, which is considered essential for the formation of more reasonable subjects, and most importantly, with the acquisition of skills that will facilitate life in and out of school. (shrink)