This story uses the vocabulary from Chapter 1A of the Realidades 2 textbook with the negative and affirmative expressions (mostly algun and ningun but others are there). You can use the slides to circle the usage of these expressions. The story is told in the past which allows the teacher to expose the students to the past tense earlier than the textbook presents it and use it without teaching it explicitly. Indirect and direct object pronouns also appear in the story. This is a great way to use the CI approach while sticking to the textbook.