This the third PowerPoint in a series on the Spanish preterit. This one deals with verbs that are irregular in the preterit conjugation as well as verbs that have an irregular stem in the preterit. The students are given the opportunity to practice while the concept is fresh in their minds in order that they are able to assess their understanding. The practice could be used the next day as an assessment so that the teacher can determine the degree of understanding. Students are encouraged to discover patterns and apply their knowledge to similar verbs. Please let me know of any changes that might help me improve this PowerPoint and perhaps other PowerPoints.