Medidas agrárias utilizadas pelo povo Xukuru do Ororubá na cubagem de terras

Abstract

The objective of this research is to present the ways, practices and techniques used by the Xukuru do Ororubá indigenous peoples, who are located in the city of Pesqueira-PE, as well as to answer if this system of measures is used throughout the territory, if it is effective and what are its purposes. For this, we use the theory of ethnomathematics, whose main aspect is to value the mathematical knowledge that each social group uses, in particular, it observes the own concepts that indigenous people practice to measure areas of land with the method called “land cubing”. For this study, a qualitative field research was carried out, in which three volunteers participated, where one makes use of decimal places while the other two despise it. They were submitted to a semi-structured interview as well as to an informal conversation circle, in order to share their knowledge. We had identical results in the calculations of the cubers in relation to the regular polygons, while in the irregular polygons there was a small difference between the calculations presented by the cubers in relation to the official values. In this way, it is possible to affirm that the techniques used by the indigenous people are effective with regard to the values obtained, taking into account factors such as the speed with which the calculations are carried out and the minimum difference presented when compared to the official values.