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.
David Bohlke has over 20 years of experience as a teacher, teacher trainer, program director, editor, and materials developer. He has taught in universities, high schools, language institutes, and corporations in Japan, Korea, Saudi Arabia, and Morocco, and has conducted multiple teacher- training workshops around the world. He specializes in creating fun, flexible, and easy-to-use classroom materials.