Mario Herrera

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 previous series include Backpack, a seven-level primary EFL course,Pockets, a three-level pre-primary EFL course and Cool Chat Connected, an EFL course for secondary schools. As an international consultant and teacher trainer, Mario Herrera travels the globe, directing seminars and delivering professional development workshops throughout the Americas, Europe, the Middle East and Asia.

English Course Side by Side Plus Author Bill Bliss

Barbara Hojel

Elaine Boyd writes, teaches and examines English language material. She taught English for over 20 years in Italy,Spain and the UK. She has also been an examiner, both in the UK and abroad, and has written a wide range of exam material for over 15 years. She has particular expertise in Writing, Listening and Speaking exams.

She has completed a PhD in Linguistics and has a particular interest in vocabulary. Elaine is currently working on developing online tests in English.

English Course Side by Side Plus Author Steven J. Molinsky