This study aimed at analyzing the influence of audiovisual materials in the English learning process among seventh-grade students from a Colombian high school. To this end, a case study was conducted; this approach emphasized an exploration of the interactions, attitudes and behaviors of the students and the teacher inside the classroom. Data was collected through five non-participant observations, seven semi-structured interviews and sixteen open-ended questionnaires. The information comprised the opinions and the attitudes from the teacher and the students when audiovisual materials were used while learning English. The analysis of the data signaled a positive influence of audiovisual materials among the students, since it increased their vocabulary, pronunciation and motivation. Furthermore, it allowed the English teacher to explore innovative teaching techniques.