![]() The results show that students get into contradictions, because despite finding certain conditions for the measure of the segments of a triangle and working previously with unsolvable problems, they cannot recognize a triangle with wrong measures and even claim that it is possible to obtain the perimeter of three segments of a figure which is not closed. These activities served as a prelude to address a problem of calculation of area and perimeter of a triangle with wrong measures. ![]() theoretical reflections on the concept of didactical contract of Brousseau were considered, as well as the problem solving model of (Lester, 2013: 258), this allowed the design of activities regarding triangles construction using paper strips. ![]() Pendidikan Matematika Realistik Indonesia (PMRI). Within the experimental design, there is a problem of calculation of area and perimeter where the rupture and establishment of didactical contract is analysed. Konferensi Nasional Penelitian Matematika dan Pembelajarannya (pp. ![]() This study reports the results of the implementation of an experimental design in a high school mathematics classroom (students 12-14 years old) aimed at the construction of triangles, given three segments. ![]()
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February 2023
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