Malheiro, J.M. da S. and Teixeira, O.P.B. 2019. The problem solving and the investigative experimentation in the curricular guidelines for the elementary and middle school in Brazil. Educação em Perspectiva. 10, (Dec. 2019), e019027. DOI:https://doi.org/10.22294/eduper/ppge/ufv.v10i0.7091.