Ingles en 100 Dias® Series: - The proven 100 Day Method for learning a language. Our department of language instruction has developed a method that breaks down learning a language into 100 fast and easy to follow steps. - Meets the high standards put forth by ACTFL (American Council on the Teaching of Foreign Languages), AAP (American Association of Publishers), and TESOL (Teachers of English to Speakers of Other Languages) as well as a member. - Chosen by Barnes & Noble, Target, Walmart, Costco and Sam#s Club as a main offering. - Chosen by libraries across America as a preferred selection in self-study language instruction. - Designed with ACTFL#s (the American Council on the Teaching of Foreign Languages) 5 Cs in mind: Communication, Cultures, Connections, Comparisons, and Communities. - Excellent quality at an affordable price. - Proudly manufactured in the United States of America. #Highly recommended for all libraries and bookstores.#-Dolores M. Koch, New York City