O n f e r e n c e

Liliana Cuesta Medina, Laura Carreño
Universidad de La Sabana, Chía, Colombia 
[e-mail], [e-mail] 
Wearing the Three Hats: an Integrative Perspective of CALL 
Teachers’
 Action 
Bio data 
Liliana Cuesta Medina
is a teacher trainer, lecturer, researcher and master’s thesis 
director 
in the Master’s programs for in
-service English teachers at the Department of 
Foreign Languages & Cultures, Universidad de La Sabana, Chía, Colombia. Additionally, 
she is the academic coordinator of the Master in Language Teaching-Autonomous 
Learning Environments. She holds a B.A. in English and Spanish from Universidad 
Pedagógica Nacional and a Specialization in Applied Linguistics to the Teaching of English 
from Universidad La Gran Colombia, Bogotá, Colombia. Liliana also studied American 
Literature in Lynchburg College and in Central Virginia Community College (VA, USA). 
She has been involved in local and international teacher development programs, mainly 
in EFL, E-learning and E-
tutoring. Her research interests are CALL and learners’ self
-
regulation in blended/virtual learning environments, which are core areas of her PhD 
research and the topics of various academic articles. 
Laura Carreño Bolívar
holds a BA in Modern Languages and a Master’s degree in 
Applied Linguistics to TEFL from Universidad Distrital Francisco José de Caldas, Bogotá, 
Colombia. She has been an English teacher for over seven years in several higher 
education institutions, holding varied positions. Laura has been a speaker in numerous 
academic events and has also led teacher-training projects. She currently works as a 
mentor in the Department of Foreign Languages & Cultures, Universidad de La Sabana, 
Chía, Colombia, where she also coordinates some of the Language Diploma courses 
offered. Her research interests include collaborative learning, CALL and online learning 
environments.