Let's face it - mastering the preterite and imperfect tenses in Spanish can be a daunting task for some Spanish students! This packets introduces acronyms WATERLOADS and BOSSIESS to help students memorize the preterite and imperfect tenses. This packet teaches the preterite and imperfect with scaffolded notes, practice activities and games. Use the acronym WATERLOADS to help students understand when to use the imperfect and BOSSIESS with the preterite. Included in this 55-page packet are: scaffolded notes, charts and activities practicing regular and irregular preterite verbs, charts and activities on conjugating in the imperfect, exercises practicing words and phrases commonly used with the preterite and imperfect, "Go Fish" game to practice the preterite, writing activities, short readings, and a speaking activity about childhood activities among other things. This is a comprehensive review of the two tenses that will help students make sense of a very complex topic in Spanish!