RT journal article T1 Development of Sustainability Competencies in the area of Didactics of Mathematics A1 Moreno Pino, Francisco Manuel A1 Jiménez Fontana, Rocío A1 Romero Portillo, Daniel A2 Didáctica AB This article presents the results of the analysis of the development of sustainability competen-cies of students enrolled in subjects in the area of Didactics of Mathematics of three different degrees in the Faculty of Educational Sciences at the Universidad de Cádiz. To carry out this analysis, the sustainabil-ity questionnaire of the EDINSOST project was used. This questionnaire consists of 18 items related to the development of the four sustainability competencies proposed by the Sectoral Commission of the Confer-ence of Rectors of Spanish Universities. A total of 105 students responded to a questionnaire composed of items expressed like a four-point Likert scale. Three types of composite indicators were defined to analyse the students’ answers in each competency, competency unit, and mastery level. The results reveal how the development of the sustainability in students depends on the degree analysed. PB Sociedad Española de Investigación en Educación Matemática SN 2254-4313 YR 2023 FD 2023 LK http://hdl.handle.net/10498/34568 UL http://hdl.handle.net/10498/34568 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 13-nov-2026