Needing a quiz for your students or a worksheet for them to decide whether to use IR or SER in the preterite tense? This is the perfect 10 point assessment for them to accomplish. This can also be used as en exit slip to assess your students understanding before you quiz them as well.
This document also asks the students to analyze their response for the second section. They must tell which verb is in the sentence and give a definite reason as to why it is either IR or SER.