Angela Blackwell is a well-accredited author, teacher, and teacher trainer with extensive international ELT experience. Her credentials include an R.S.A. / University of Cambridge diploma in TEFLA and an MA in TESOL from San Francisco State University. Therese Naber is a well-accredited
author, teacher, and teacher trainer with extensive international ELT experience. Her credentials include an R.S.A. / University of Cambridge diploma in TEFLA and an MA in TESOL from the University of London.