Tiranosaurio Rex

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.

Aislado por mar, desierto y cordillera, Chile es un lugar privilegiado por sus paisajes y pájaros sorprendentes. El libro que tienes en tus manos es una invitación a adentrarse en el mundo de las aves que habitan en el valle central de nuestro país, recorriendo su geografía desde la cordillera de los Andes hasta el mar. Este libro presenta a los PÁJAROS CHILENOS típicos de Chile Central y sus hábitats. A través de ilustraciones y diferentes relatos, te permitirá descubrir sus variadas características y comportamientos, y así explorar la forma de vida de nuestros compañeros...

When it's hot outside, what can you do to stay cool? People have found many ways to cool off and cool down. How cool is that? Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Perfect for English language learners, this Spanish book builds young ...

Sergio, un niño pequeño, detesta a los monstruos que todas las noches aparecen en su habitación. Hasta que se harta de tener miedo y decide buscar una manera de acabar con ellos de una vez por todas. Una historia divertida que enseña la necesidad de afrontar los problemas de la vida.