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.

Learn how scientists channel energy from the sun to power awesome innovations! 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 1st grade students’ early literacy skills.

'Pasaporte a2' ofrece un material para aprender español utilizando los planteamientos recogidos en el marco comun de referencia y en los niveles de referencia para el español, que permiten ayudar al alumno a conocer , comprendery utilizar el español. Está compuesto por seis módulos. Cada módulo está formado por los cuatro ámbitos de uso de la lengua (ámbito personal, ámbito público, ámbito profesional y ámbito académico) para poder utilizar la lengua de unamanera más adecuada a cada situación.Propone un aprendizaje activo, dinámico y centrado en el alumno mediante acciones...

Con este texto los lectores aprenden todo sobre los chimpancés y su increíble hábitat de selva tropical. Las fotografías de color dan un vistazo a la vida de un chimpancé mientras que las preguntas de pensamiento crítico y un glosario de fotos ayudan a los lectores de no ficción por primera vez. With this carefully leveled text, now in Spanish, readers learn all about chimpanzees and their incredible rain forest habitat. Full-color photographs give a glimpse into the life of a chimp while critical thinking questions and a photo glossary assist first-time nonfiction readers.