Introduction
Listening is a language skill, thus it can be developed through practice. In Content and Language Integrated Learning (CLIL) it is important that students are provided with the suitable materials to listen to. These materials come in a variety of forms, first as a teacher‟s input, as well as peer input and interaction and as information source (recorded lectures, films, tutorials, etc). In language classes an audio-lingual method was considered to be very important for students to develop a better pronunciation, to train comprehension skills. Vandergrift (2002) points out that in the early 70‟s, work by Asher, Postovsky, Winitz and, later, Krashen, emphasized the role of listening as a tool for understanding and central to the process of language learning.