Real-life situations are presented to help readers learn about math concepts in these books written in Spanish. This 12-titles set supports Common Core Mathematical Practices as well as the Numbers and Operations NCTM Mathematics strand, and includes high-interest nonfiction text, a problem-solving activity, supporting graphics, highlighted content-area vocabulary, and "Let's Explore Math" sidebars. 32 pages per book. Titles in this set include ¡Es hora de festejar! (Party Time); ¡Sonríe! Vamos al dentista (Smile! A Trip to the Dentist); ¡Juguemos! (Let's Play); ¿Qué hay en el desván? (What Is in the Attic?); Una montaña de basura (A Mountain of Trash); Celebremos los cien días (Celebrate 100 Days); Nuestro viaje a la ciudad (Our Trip to the City); De compras por la ciudad (Shopping in the City); Nuestro almuerzo de cosechas (Our Harvest Lunch); Nuestra reunión familiar (Our Family Reunion); Preparémonos para acampar (Getting Ready to Camp); and El mundo de los transportes (The World of Transportation).