The author of this thesis believes that Geography Education and School Cartography have both great importance for the development of spatial thinking among students in K-12. This dimension of intelligence is crucial for citizenship and for the practice of many professional and daily activities. Considering such a framework, the main goal of this research is to assess the contribution of Geography Education and School Cartography in Brazilian middle school to enhance student's capacity to think spatially in situations that encompass spatial representations, specially cartographic ones, in geographical contexts. To answer this question we decided to betake the field research known as "spatial thinking", developed mostly in the U.S. during the last two decades. As a consequence we adopted the definition of spatial thinking that was presented in the report of the National Research Council (2006), which has become the main reference in the field: "Spatial thinking-one form of thinking-is based on a constructive amalgam of three elements: concepts of space, tools of representation, and processes of reasoning" (NRC, 2006, ix). Our methodology was based on two interconnected paths. We analyzed the three most adopted Geography textbooks collections for the four years of Brazilian middle school (6 th to 9 th grades) with the purpose of assessing in which extent the exercises in those books are capable of fostering student's spatial thinking. In order to stablish a comparison with Brazilian textbooks we also assessed a French textbook collection destined to the same grade levels. To perform such an assessment, we used the Taxonomy of Spatial Thinking (Jo and Bednarz, 2009) designed for this particular purpose and replied by Scholz et al. (2014). The study identified not only the ratio of questions demanding spatial thinking but also the processes of reasoning involved. The second methodological path was based on the use of the Spatial Thinking Ability Test (STAT), designed by Lee and Bednarz (2012). We have administered the STAT to 268 students of six different Brazilian schools, all of them in the end of the 9 th grade. After organizing all the data, we compared the Brazilian results with those of two international studies where the same test was administered: one school in the United States (LEE and BEDNARZ, 2012) and three schools in Ruanda (TOMASZEWSKI et al., 2014). Our analysis included both the global results of students overall performance in the test and their accomplishments regarding the eight modes of thinking spatially defined by the authors of the STAT. Our final conclusions were the results of the comparison between the outcomes obtained from our two methodological paths.