This work presents some results of project that comparatively investigated the expansion of the Brazilian, Argentinean and Uruguayan Scout Movement in their connections with the educational history. The reflections were supported by the relation between the propositions/practices of Scouting and the education of the body, focused on the period from 1910 to 1946. Taking Chartier and Certeau as theoretical basis, primary sources located in Rio de Janeiro, Buenos Aires and Montevideo, collected in the period from 2013 to 2015, were analyzed. Books, articles published in periodicals and publications produced within the framework of the scout movement and also theses presented either in educational or scout congresses, were consulted. The main reason for carrying out the research was highlighting the value of scouting and body education for South American educational history in the first decades of the 20th century. It was found that in each of the countries studied scouting stimulated discussions and practices which addressed problems and possibilities of the education of children and youngsters. In general, the relevance of scouting in each of the countries was due to the scouting's criticisms of the educational practices and school institutions, then existing. In addition, the movement was aligned with analytical, pedagogical and political perspectives that circulated around the world and sought to make real a "modern pedagogy" wherein varied corporal practices should be privileged to form the citizen morally responsible, healthy and supporter of traditional gender roles attributed to boys and girls. In Brazil, Argentina and Uruguay, this platform relied on educational particularities of each reality, dependent on the strength of the schooling process that took place in these countries, as well as on the importance of the army and militarism in the promotion of practices related to the socio-political directions of the educational challenges. They were all considered urgent by the defenders and practitioners of the movement created Robert Baden-Powell in 1907 in England. Taken into account similarities and differences in the representations produced on the education of the body in the history of Scouting in Brazil, Argentina and Uruguay are concerned, the importance of the scouting history and the history of corporal education is endorsed to think about the educational history of Latin America in the first decades of the twentieth century.