The document provides instructions for students to write a poem in Spanish using the phrase "Cuándo envejezco, ir+a+infinitive..." at the beginning of each of at least 15 sentences. The poem should describe things the student wants to do when they grow up, such as places they'd like to go, people they'd like to meet, jobs they'd like to have, and other goals and aspirations. The document outlines criteria for evaluating the poems on grammar, vocabulary, and aesthetics.