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 serie Cienciaenshorts nace para dar cabida a pequeños relatos que acercan al público de forma amena diferentes aspectos de la ciencia en formatos literarios. Obras menores solo en extensión. Se trata de una fórmula imaginativa que puso en marcha hace años nuestra editorial en forma de concurso, donde los autores de los relatos fueran científicos-escritores con voluntad de trasmitir con precisión conceptos científicos a la sociedad, de una manera comprensible para esta. El jurado del II Concurso de relatos científico-literarios "¿Te atreves...?" estuvo compuesto por: César de...

Few natural forces seem as much like magic as magnets. Perhaps that’s why magnets are so fun! Young scientists will love learning about amazing magnets, both natural and man-made. They’ll discover how magnetism is harnessed to help us in many ways. This STEM-supportive volume contains comprehensible text and photographs of students and scientists utilizing magnets. It also includes a simple, fun concluding activity to encourage readers to use this super science tool themselves.

Readers will learn all about the United States' westward expansion in this interesting nonfiction Spanish-translated book, which uses appealing images, helpful maps, and supportive text to keep children engaged from beginning to end!

Libro de texto de religión católica de 2o de ESO, en castellano, para Andalucía. Contiene 144 páginas y 10 unidades didácticas que desarrollan el currículo oficial de la Conferencia Episcopal Española y tiene en cuenta la realidad social de Andalucía. Está destinado a los alumnos del segundo curso de la Educación Secundaria Obligatoria. El eje vertebrador de todo el libro, orientado al aprendizaje de la religión católica en el centro escolar se estructura en torno a estos bloques temáticos: - Las personas nos preguntamos (tema 1) - Por qué y para qué vivimos (tema 2) - Dios...