Professor Jack C. Richards is an internationally recognized authority on English-language acquisition, teacher training, and materials design. A well-known lecturer and consultant, he has taught at universities in the United States, China, Singapore, New Zealand, Canada, Indonesia, and Brazil. Professor Richards' many successful publications include the Interchange series, Approaches and Methods in Language Teaching, and Curriculum Development in Language Teaching.

Carlos Barbisan
Carlos Barbisan (MA Reading University, U.K.) was an experienced teacher, teacher trainer, and coursebook writer. He taught in Uruguay and Brazil and ran courses for teachers in Latin America and Europe. Carlos wrote courses for teaching English to children, adolescents and adults. His main area of interest was teaching young adolescents.

Chuck Sandy
Professor Chuck Sandy has directed English language programs and taught in universities, language institutes, and teacher-education centers in Japan, the United States, Korea, and Brazil. In addition, he is a frequent lecturer on English language teaching throughout Asia, South America, and the United States. He is Professor of English Language and Culture at Chubu University in Japan.