Numbers have power, magic, even. Not the abracadabra kind, but the kind that makes a reader sit up and pay attention even though they don’t know why. Sarah Aronson understands the power of the number three as a literary device and uses it masterfully in her picture book, Brand New Bubbe.
The primary purpose of a refrain, or a recurring line throughout a poetic work (or prose for that matter), is to draw attention to something important. Used effectively, it can heighten the emotional resonance of your story and make it feel more universal, and LaRocca uses hers to great effect.