Resumen: The present end-of-master dissertation aims at designing an innovative English didactic unit for students in the 4th year of Secondary education based on two main necessities identified during the periods of school placement in the Master’s: a rather traditional approach to teaching English, which leads to lack of motivation among students, and the rare percentage of cultural diversity in the school. Two innovations are proposed to deal with these necessities, which entail a change in the methodology of teaching English by dealing with a topic which is far from students’ every day’s experiences: cultural diversity and, more specifically, immigration. The methodology used to cover this topic is Project-Based Learning, while the principles of today’s predominant approach in language teaching are incorporated: Communicative Language Teaching. These innovations are complemented by the implementation of Cooperative learning. The final outcome of the project is to create a video with useful information and resources for new immigrants arriving in Zaragoza. Students collaborate with the organization “Distintos en la Igualdad” to create this product, which is published in the association’s YouTube channel as well as in other digital platforms.