Simple Spanish Preterite and Imperfect Drag and Drop Self-Checking duo Activity B undle is for self-directed studies, for at-home learning, or in-class, whole-class teaching on a whiteboard or a smart board. There are pages of simple lessons on the formation of regular, irregular, stem-changing, and other orthographic changes (preterite) and the formation of regular imperfect and its three irregular forms. They are followed by pages of self-checking drag-and-drop practice and informal assessmen