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.

Estructurado en doce unidades; Enfoque comunicativo; Estudio inductivo de la gramática; Resumen nocio-funcional.

Deserts may seem like harsh, uninhabitable places, but they support a diverse quantity of plant and animal life. And, they aren't always hot! Deserts serve an important role in Earth's existence, too. Readers learn about hot and cold deserts alike, as well as semi-arid and coastal deserts in this Spanish-translated title. From the Horned Lizard to the Saguaro cactus rooted in rich soil, the desert biome will amaze readers. This 6-Pack includes six copies of this title and a lesson plan.

Practica y domina la armonía musical moderna. En este libro he volcado una gran cantidad de ejercicios basados en mi libro Armonía Moderna Paso a Paso. Podrás practicar en diferentes tonalidades y progresiones de acordes todos los conceptos de la armonía moderna: Intervalos, escalas mayores y menores, sus alteraciones; acordes tríadas y cuatríadas, funciones tonales, dominantes secundarios, cadena de dominantes, dominantes sustitutos, rearmonización de temas y melodías, etc. Desde que publiqué Armonía Moderna Paso a Paso tenía pendiente completar el trabajo con un libro de...

Una verdadera clase de paleontología para niños (y para mayores). Asesorada por verdaderos doctos en la materia, Aliki nos adentra en el fabuloso mundo de estos gigantescos animales prehistóricos, haciéndonos ver las diferencias entre varias especies, y l