Robyn Brinks Lockwood teaches academic courses at Stanford University and is the education coordinator of the American Language and Culture summer program. She has edited and written numerous textbooks for reading, writing, listening, and speaking for second-language learners in a variety of levels and settings. 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. Kristin Sherman has been an ELT teacher, teacher trainer, consultant, and course book author for more than 15 years. She regularly conducts teacher training workshops throughout Latin America and Asia. Kristin is co-author of several ELT series and has written print materials and online content for many other publications. She holds an M.Ed. in TESL from the University of North Carolina, Charlotte.