Do families grow on trees? When Eva is asked in school to create her family tree as a homework assignment, she gets confused about where families come from. Do they grow on trees? Eva looks to her grandmother for guidance and to learn what a family tree is. The last two pages invite the readers to draw their own family tree Creixen les families als arbres? Quan l'Eva ha de crear el seu arbre de familia com a deures per l'escola, es pregunta d'on venen les families. Creixen als arbres? Eva li demana ajuda a la seva avia per aprendre que es un arbre de familia. Les dues ultimes pagines inviten al lector a dibuixar el seu propi arbre de familia."