Teaching arithmetic mean from the perspective of statistical literacy in the final years: Reflections with teachers

The article discusses the results of a master's research that aimed to analyse reflections with Mathematics teachers of the final years of Elementary School on possibilities of teaching the arithmetic mean from the perspective of Statistical Literacy. Data were obtained from two virtual Focus Group meetings in which some types of errors about arithmetic mean were problematized, theorized about Iddo Gal's Statistical Literacy model and teaching proposals about arithmetic mean were elaborated. Four Mathematics teachers from the final years who teach in schools in different municipalities in the state of Pernambuco participated in the group. The approaches developed by the professors involved possibilities of mobilizing dispositional elements in articulation with elements of knowledge about the arithmetic mean. The study emphasizes the importance of introducing instructional approaches regarding the arithmetic mean within the framework of Statistical Literacy, with an emphasis on addressing critical issues.