This is a 28 slide PowerPoint that works on the prepositions from Unidad 3, Leccion 1 of the Avancemos 2 text. That is the main focus, but the vocabulary used is also from this Unit/Lesson. In fact, the verbs from this unit/lesson are also strongly incorporated so it's an excellent final step to completing and reviewing Unidad 3, Leccion 1. When I teach from this powerpoint, I have students take out a sheet of paper and give them time to write out the 10 sentences to the best of their ability while we go through each slide. As we go over the answers (included in the PPT), it allows students to see how these grammatical concepts work in conjunction with their vocabulary.