Vocabulary practice is important to help learners develop the kind of vocabulary knowledge that will contribute to their language learning success. This practice may take the form of activities and exercises that are either included in text books or designed on paper by the teacher. Nowadays, however, there is also the option of using multi-media resources to this end. In order to examine how effective the use of multimedia materials is in the vocabulary learning process, this paper reports an Action Research project implemented in a Mexican EFL high school classroom. The findings reveal the extent to which the material was helpful for learners, as well as the issues they had using it.