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.

"Mauro se lleva bien con todos los animales del bosque, pero le gustaría tener un mejor amigo ..."--P. [4] of cover.

This series will capture the attention of ELL students with its irresistible, full-color photographs of young animals in their natural habitats. The Spanish text uses authentic language to describe animal characteristics and life cycles. Each chapter includes a question-and-answer feature about the animal's behavior and physical traits, while a two-page "animal profile" at the end of each book provides quick facts about the animal's size, senses, habitat, and animal relatives.

Los pequeños «hacen»/«crean» arte para conocer, explorar, experimentar y, en definitiva, descubrir su mundo. El arte les permite descubrir el misterio, la creatividad, la alegría, la frustración. Lo que para ellos importa es el proceso del arte, no el resultado. El libro contiene más de 200 procesos completos de experiencia artística, ordenados por estaciones del año y divididos en meses. Las ideas plásticas son de dibujo, pintura, modelado de masa y arcilla, artesanía y construcción. Los trabajos, perfectamente descritos y secuenciados, pueden ser utilizados del modo más...

This work narrates the meeting of two young students who in a chance chat, begin to play with stars and numbers and learn about physics, chemistry and astronomy. They learn that science is in everyday life so that we imagine it is not a restricted area, only for the geniuses, but a tool, a way of life, a passion.