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The transition between elementary and secondary school has been the subject of several studies in education and many educational and psychological aspects are listed as reasons for ruptures there are in this transition. Apart from that, considering specifically mathematics, there are indications of particular aspects of this discipline to intensify such disruptions. In order to identify aspects of this rupture we took the equal sign as a key concept for both elementary and secondary school and we assumed the conjecture that the resignification of concepts can contribute to the distancing between both moments. In this sense, our research aimed to analyze how the equal sign has been discussed in two

O sinal de igualdade e seus diferentes significados: buscando rupturas na transição entre os Ensinos Fundamental I e II