Carnival Celebrations: Masks Students are introduced to the culture of Puerto Rico in this look at the annual Carnival—or, more specifically, at the masks worn by the revelers. This set of four lessons is divided into grades K–2, 3–5, 6–8, and 9–12. The youngest students build their vocabulary by describing the masks. Older students do research on similar Carnival celebrations around the U.S. Uses Lulu Delacre’s wonderful books for children about Puerto Rican Carnival.