Samuela Eckstut-Didier is a Senior Lecturer at Boston University's Center for English Language and Orientation Programs (CELOP) in Boston Massachusetts. She holds an M.Ed. degree in TESOL from Teachers College Columbia University as well as a Royal Society of Arts Certificate in TEFL. She taught for many years in Athens Greece and was a Fulbright teacher trainer in the Veneto-Friuli region of Italy. She has authored and co-authored many ESL and EFL textbooks including Strategic Reading Center Stage Focus on Grammar 1 Workbook Focus on Grammar 2 Workbook and Finishing Touches. Amy Cooper has over twenty years of experience in ELT publishing and she has worked on textbooks in all skill areas. She holds graduate degrees in Theoretical Linguistics and Applied Linguistics from Cornell University and Teachers College Columbia University.