Mercedes Perez Berbain has an M.A. in Education from the Oxford Brookes University, UK and is currently Senior Lecturer at J.V. González College of Education, Argentina. She is an author of teaching materials for leading publishers worldwide  and is the Co-editor of International Perspectives on Diversity in ELT. Mercedes is also a faculty member at Pilgrims Teacher Training, Oxfordshire, UK and a reviewer at highly esteemed educational journals.

Hania Kryszewska is a senior lecturer at the University of Gdansk, Poland. She has been a teacher trainer for the last 33 years and regularly trains at Teacher Training Summer Schools organised by Department for Continuing Education, University of Oxford and Oxford Teacher’s Academy. Hania is also the Editor-in-Chief of Humanising Language Teaching website magazine.