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.

La increíble e inspiradora historia de un niño que desde el corazón de África supo vencer todos los obstáculos y logró convertirse en atleta olímpico. Un canto a la esperanza y a la paz que nos muestra que hasta en la oscuridad, siempre brilla una luz que nos guía. This is the incredible, inspiring tale of a little boy from the heart of Africa, who was able to overcome all of the obstacles in his life, and become an Olympic athlete. A story of hope and peace, which shows us how there is always a light that shines to guide us, even in the darkest moments. Lexile Level: 910L

Exploración espacial is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

La configuración de las mercancías en unidades de carga es un factor clave para asegurar la calidad en el transporte y la manipulación de las mercancías. Este manual reúne los conceptos fundamentales acerca de la formación de las unidades de carga para su traslado en todos los modos de transporte, con el fin de garantizar que alcancen su destino en el momento previsto, en óptimas condiciones y con el mínimo costo. Se definen los elementos que otorgan seguridad y estabilidad a la unidad de carga, los envases y embalajes, las tipologías de las cargas y los tipos de unidades de carga,...

Learn about the rich history of Mission San Fernando Rey de España: how it started, the people who ran it, the indigenous population, and its legacy today.