21st Century Communication 1: Listening, Speaking and Critical Thinking: Teacher's Guide

Laurie Blass is a writer and editor specializing in print and digital English Language Teaching materials. She has an M.A. in Linguistics and a TESL certificate from the University of Pittsburgh and has taught ESL in the United States and France. She is the author/co-author of over 40 ELT titles representing a wide range of audiences, from adult education to English for academic purposes. Lida Baker is the author of more than two dozen print and digital books for students and teachers of English as a second or foreign language. Now a full-time author and editor, she previously taught ESL at the American Language Center, University of California, Los Angeles Extension. She lives in Los Angeles.