A study on the changes on teachers’ knowledge and beliefs after a workshop based on mathematics education software, by relying on fuzzy method Alizadeh-Jamal, Mohammad Shahvarani, Ahmad Iranmanesh, Ali Tehranian, Abolfazl Fuzzy analysis Geogebra Geometry Teachers’ beliefs Technological pedagogical content knowledge Análisis Fuzzy Conocimiento tecnológico pedagógico del contenido (TPACK) Creencias de los docentes Geogebra Geometría In this paper, the effect of holding a math training workshop using GeoGebra software has been studied on the changes on teachers' knowledge and beliefs . The selected sample is 40 male and female teachers in Iran. Before and after the intervention were administered a pre and post questionnaire with two components: TPACK knowledge and teachers’ beliefs. Fuzzy logic and Fuzzy TOPSIS methods were used to analyze the data. The results of this method showed a significant difference between the results before and after the workshop. El estudio contempla el efecto de un taller de matemáticas con GeoGebra sobre los cambios en el conocimiento y las creencias de los docentes. La muestra seleccionada considera 40 docentes en Irán. Se administró un cuestionario, antes y después de la intervención, enfocado en dos componentes: el TPACK y las creencias. Los datos se analizaron aplicando herramientas del método Fuzzy mediante el cual se evidencia una diferencia significativa entre los resultados antes y después del taller. 2018-12-03T10:41:32Z 2018-12-03T10:41:32Z 2018-11 info:eu-repo/semantics/article Alizadeh-Jamal, M., Shahvarani, A., Iranmanesh, A., & Tehranian, A. (2018). A study on the changes on teachers’ knowledge and beliefs after a workshop based on mathematics education software, by relying on Fuzzy analysis. PNA 13(1), 19-40. http://hdl.handle.net/10481/53994 10.30827/pna.v13i1.6593 eng http://creativecommons.org/licenses/by-nc-sa/3.0/es/ info:eu-repo/semantics/openAccess Atribución-NoComercial-CompartirIgual 3.0 España Grupo de Investigación Didáctica de la Matemática: Pensamiento Numérico (FQM-193)