Joan Saslow has taught in a variety of programs in South America and the United States. She is the author of a number of multi-level integrated skills courses for adults and young adults: Ready to Go: Language, Lifeskills, and Civics; Workplace Plus: Living and Working in English; and of Literacy Plus. She is also the author of English in Context: Reading Comprehension for Science and Technology. Ms. Saslow was the series director of True Colors and True Voices. She participates in the English Language Specialist Program in the U.S. Department of State's Bureau of Educational and Cultural Affairs. 

Allen Ascher has been a teacher and teacher trainer in China and the United States and taught in the TESOL Certificate Program at the New School in New York. He was also academic director of the International English Language Institute at Hunter College. Mr. Ascher is author of the "Teaching Speaking" module of Teacher Development Interactive, an online multimedia teacher-training program, and of Think about Editing: A Grammar Editing Guide for ESL.

Both Ms. Saslow and Mr. Ascher are frequent and popular speakers at professional conferences and international gatherings of EFL and ESL teachers.