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The present study comes from the partial results of the research "Teaching-learning-evaluation in Mathematics in the Elementary School: exploratory-investigative activities and teacher training", developed at the University located in Southern Brazil. Specifically, the analysis of the activity listed in this article comes from a continuing teacher training, held in the city with which the group of researchers established a partnership. Thus, the objective of this study is to report the strategies used by the teachers of the Initial Years, when developing the proposed tasks, in the light of the Mathematical Investigation, contemplating the content of Algebra. The collection of data is based on the transcripts of the recorders disposed in the groups during the activity, in addition to photos, images and annotations of the linked researchers. The results indicate that the teachers expressed different conjectures for the proposed question, but the strategies had similarities among them.

Estratégias e Conjecturas Usadas por um Grupo de Professores dos Anos Iniciais em Atividades Exploratório-Investigativas de Álgebra