Elderly sisters Poly Ester and Sal Ami are both weird and weirdly happy. Their jolly antics and eccentric tastes challenge norms and appeal to young children's emerging sense of rules. Youngsters delight in the realization that being different doesn't need to be feared.Las viejas hermanas Poli Ester y Sal Ame son a la vez raras y raramente felices. Sus alegres rutinas y gustos exc?ntricos desaf?an reglas y estimulan el entendimiento de normas en los...