In this article we present our master's degree research, which addresses teaching of mathematics using the radio in the state of Rio Grande do Norte (RN), in the period from 1950 to 1970. Radiophonic Schools were established in RN by the Catholic church as a way of bringing conventional education to rural areas. Data sources for the research included all the archives the Archdiocese of Natal - RN and testimonies of people who participated in the Radiophonic School in two rural communities, Logradouro and Catolé which today are part of the municipality of Lagoa Salgada (RN). The research led us to seek support in Oral History and concepts of Cultural History. We found evidence of some applications of math knowledge that was studied in the Radiophonic School in situations related to agricultural work of the students, such as measurement of land. We present some findings regarding teaching methods and some textbooks of the time, which were submitted in the educational material produced as a result of the research (in documentary, formatted DVD).
Radiophonic School; Teaching of Math; State of Rio Grande do Norte (Brazil); Documentary