Mario Herrera, Diane Pinkley

Mario Herrera has a degree in education and an MA in EFL. He has taught English for more than 30 years at all levels, from young children to adults. He is the author and co-author of many acclaimed ESL/EFL series that are used in levels ranging from pre-primary to junior high schools. His series include Backpack and Parade, two seven-level primary EFL courses. For preschool, his most recent work is Big Fun, preceded by Pockets and Balloons, three-level pre-primary EFL courses. For secondary schools his recent publication is Big Teens, following Cool Chat Connected, another EFL course for teenagers. As an international consultant and teacher trainer, Mario travels the globe, directing seminars and delivering professional development workshops throughout the Americas, Europe, the Middle East, and Asia.

Diane Pinkley is former Director of the TC TESOL Certificate Program in the TESOL Program, Department of Arts and Humanities, at Teachers College, Columbia University in New York City. She is a well-known teacher trainer and author in ESL/EFL, and has traveled around the world presenting academic papers and leading teacher training workshops. She has authored bestselling series for both children and adults, as well. Formerly the Director of the Institute of North American Studies in Badalona, Spain, and Curriculum Coordinator at the Michigan Language Center in Ann Arbor, Michigan, she has taught all levels of ESL and EFL. Gabrielle Pritchard is an author of EFL courses and children's books. Based in the UK, she has, over the last twenty years, written materials for EFL students at all levels. Her special interest is in developing materials for young learners, both as an author and as a consultant.