Here is a great opportunity to have your students learn the irregular of Ser and Ir in the preterite. In this worksheet your will find a variety of activities (12 in total), which include a song, answering questions, speaking, etc. Have them discover how SER and IR work in the preterite and figure out the rule by themselves. They will have fun while learning this new topic. In addition, this is a great opportunity to refresh/teach vocabulary related towns/cities.