I do a unit every year that guides my students through the writing of five personal paragraphs focusing on the Preterite/Pass Compos and the Imperfect Verb Tenses. I give guidelines for peer editing, self-editing, tense distinction and a rubric for grading the final copy of the writing assignment. There are twenty pages total and a table of contents to help students stay organized during the writing process. I typically give the entire packet at once, but the sections can also be given out individually.