El ferrocarril transcontinental (The Transcontinental Railroad)

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.

The morning of August 24, AD 79, seemed like any other in the Roman city of Pompeii. So no one was prepared when the nearby volcano Mount Vesuvius suddenly erupted, spouting ash that buried the city and its inhabitants. More than 1,700 years later, in 1748, explorers rediscovered the port city with intact buildings and beautiful mosaics. This easy-to-read account is gripping and includes photos of the ruins.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of debugging. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers’ learning experience and show how debugging works in the real world. In this book, readers will find out why a magnet isn't sticking to a certain surface. This nonfiction title is paired with...

Un chico llamado Noax ha descubierto, por casualidad, unos extraños sucesos tras la desaparición de un cargamento de plata dirigido hacia uno de los mercaderes a los que quiere vender sus ricos salazones. Decide investigarlos y llegar al fondo de la cuestión. En dicha investigación se encuentra con una joven misteriosa que vive en el templo de Melkart. Con estas premisas la autora, M. Eloísa Caro, nos introduce en el mundo de los comerciantes fenicios que habitaban Gadir, la ciudad que hoy conocemos como Cádiz, en España. Un libro de aventuras para disfrutar mientras se recorre, sin...

El Zoológico Nacional Smithsonian es una de las atracciones más populares de Washington DC. Únete a los cuidadores del zoológico y aprende sobre los problemas únicos que enfrentan y sus soluciones creativas para mantener felices y saludables a los animales del zoológico. Creado en colaboración con la Institución Smithsonian, este libro en español despertará la curiosidad sobre los temas de STEAM a través de ejemplos del mundo real. Presenta un desafío STEAM práctico que es perfecto para espacios de creación y que guía a los estudiantes paso a paso a través del proceso de...