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The present study aims to present a sequence of tasks, developed by the researchers as well as the results of its application for students of the 4th and 5th year of Elementary School of a school in the city of Ourinhos, Brazil. Inspired by the historical problem “The seven Königsberg bridges”, which was solved by Leonhard Euler giving rise to Theory of Graphs, the sequence comprises nine tasks that were developed with the Scratch software. When trying to solve the tasks, the students did it in an investigative way. The choice for this problem was characterized by its easy contextualization with reality and being adapted to the children's context, allowed students to perceive a practical use of knowledge learned in the classroom, such as: moving objects in the flat space, studying vertices, edges, even and odd numbers, knowledge expected for the Elementary School. The adopted methodology was of a qualitative nature. The results showed that the students were able to approached the four theorems, which started the Graph Theory. The tasks allowed them to express themselves orally and through writing, which enabled reflections on the object of study by students and researchers.

Euler Tours a través del software Scratch: una secuencia de tareas de investigación