Dr. Javier Díez-Palomar. Associate professor in de department of Science and Mathematics Education, at the University of Barcelona. Member of CREA, Community of Research for Excellence for All. Member of GRESUD (Research Group in Education to Overcome Inequalities), consolidated research center recognized by the Catalan Government (AGAUR). President since 2019 of the Asociación Multidisciplinar de Investigación Educativa [Association of Multidisciplinar Educational Research] AMIE, which is member of WERA (World Educational Research Association). Permanent member representing Spain in the Commission Internationale pour l’Ètude et l’Amélioritation de l’Enseignement des Mathématiques (CIEAEM) since 2012. Link convenor of the network 24 (Research in Mathematics Education) in ECER (European Conference of Educational Research), from​ 2014 until 2018. He is also member of the Numeracy Expert Group (OECD) working at the PIAAC survey (2018-2023). Chief editor for REDIMAT-Journal of Research in Mathematics Education and Adults Learning Mathematics: An International Journal. Dr. Díez-Palomar has been a Fulbright Visitor Scholar (post-doctoral) in the Department of Mathematics at The University of Arizona from 2005 to 2007, where collaborated as researcher and member of CEMELA, Center for the Mathematics Education of Latinos/as, lead by The University of Arizona.