Soohee Kim received her Ph.D. in Linguistics from the University of Washington, where she taught Korean language, culture and linguistics for 17 years. She is interested in the role of grammatical knowledge in language acquisition and the maintenance and revival of heritage language skills. She continues to study many languages including Quechua, Tagalog, Japanese, Chinese, Russian, Polish, Tibetan, Urdu, Hebrew, Latin and Sanskrit. She is the author of Korean Flash Cards and the lead author of the Korean textbooks: Korean Grammar: The Complete Guide to Speaking Korean Naturally. Haewon Cho is an experienced language teacher who has taught Korean at all levels at the University of Washington and University of Michigan. She is currently director of the Korean language program at the University of Pennsylvania. She is co-author of Korean Grammar: The Complete Guide to Speaking Korean Naturally. She holds M.A. degrees in Linguistics and Teaching ESL from the University of Washington. Her teaching and research interests include language assessment and teaching with technology as well as business language teaching. Emily Curtis holds a Ph.D. in Linguistics and an Ed.D. from the University of Washington. She teaches courses in general linguistics, phonology and morphology at Western Washington University and is a consultant in intercultural communication and language pedagogy. Her research interests are in phonology, heritage language and metalinguistic awareness. She has studied French, Japanese, Korean, Mandarin, Spanish and Lushootseed and is also co-author of Korean Grammar: The Complete Guide to Speaking Korean Naturally.