I use this novel in Spanish with my first year heritage / native Spanish speakers class. It's accessible, high interest and short. For the first two thirds of the book, I have listed vocabulary words that are high frequency (2000-4000 word range) that are great ideas to use on a word wall. I would have students vote on which words we should use as vocabulary words using this list to guide me. I also starred words that appear many more times later on in the book (and thus make better choices for vocabulary words).