The effect of short historic documentary films on vocabulary acquisition during the oral production in the CLIL classroom

Abstract

The present quasi-experimental study shows the effect that short historic documentary films have on vocabulary acquisition during oral production in the CLIL classroom in the Social Studies class with eighth-graders at Técnico Salesiano High School during the school year of 2018-2019. The sample employed was comprised of 65 participants where the treatment group (n=32) received the application of the treatment, while the control group (n=33) received no treatment. The treatment lasted 38 sessions of 1 hour each where short documentaries were applied to help acquire the relevant vocabulary in the treatment group. Different instruments were used for data collection. For the collection of data and the measurement of the effects produced by the application of short historical documentaries, a preliminary and a post-treatment test were applied. In addition, two surveys were used, one preliminary and one after the treatment. The data analysis indicated that there were positive and significant effects on the acquisition of vocabulary in students of the treatment group.