Fernanda Liberali is a teacher educator, researcher and professor at the Pontifical Catholic University of São Paulo, in the Department of English, in the Program of Postgraduate Studies in Applied Linguistics and Language Studies and in the Post Graduate Program in Education: Education of Educators. She holds a degree in Languages from the Federal University of Rio de Janeiro, a masters and a doctorate degree in Applied Linguistics and Language Studies from the Pontifical Catholic University of São Paulo, and two postdoctoral degrees from the University of Helsinki and from the Berlin Freie Universität. She is currently involved with a new post-doctoral study in the area of play/performance and agency at Rutgers University. She is the leader of the Research Group / CNPq / PUC-SP Language in Activity in the School Context; an advisor to CNPq and FAPESP; a Brazilian representative of the international committee of the International Symposium on Bilingualism and Bilingual Education in Latin America (BILINGLATAM), and the general coordinator of the national extension and research project DIGIT-M-ED Hyperconnecting Brazil. Among her relevant academic and administrative activities are: the national coordination of the DIGIT-M-Ed International project, funded by Marie Curie Actions, the Brazilian representation of the international Vygotskian association ISCAR, the coordination of projects for the continuing education of directors, coordinators, teachers and councils of municipal public schools of São Paulo, the participation in boards and editorial commissions of scientific journals. Within the framework of Socio-Historical-Cultural Activity Theory, her main research interests are related to teacher education, teaching-learning, multimodal argumentation, multilingualism / bilingual education.