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This work has been developed by the Fundão Project: Statistics and Probability, a collaborative project of the Federal University of Rio de Janeiro (UFRJ), composed of professors, undergraduate students, and school level mathematics teachers. The research is part of a study whose focus is the teaching and learning of statistics and probability at elementary school. Our goal is the professional development of mathematics teachers. Focusing on the initial stage of statistical literacy and based on an integrated approach, we considered the (recent) Brazilian normative orientations of Common National Curriculum Basis (BNCC) in statistics and probability to propose didactic sequences along the lines of the resolution of statistical investigation problems by the Guidelines for Assessment and Instruction in Statistics Education (GAISE).