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.

Describes how the rig was built, how it stands out in the water, and how much drilling it does in a day.

Diviértete con las locuras del pirata Arreglaentuertos y ahorra un dinerito con este fantástico libro-hucha.

GRADES K–2: Bring Spanish into the classroom! Introduce early elementary students to the topics of solar heat, light, and energy with this science-themed Spanish title. FEATURES: Kids will learn about how the sun's energy is harnessed, and complete an activity that supports further comprehension. EARLY BILINGUAL LITERACY: Help young learners strengthen their bilingual skills—add the English version of this title into your collection, too. WHY MY PHYSICAL SCIENCE LIBRARY: This collection introduces a variety of science topics while presenting complicated information in easy-to-understand...

Jugar con el balón es el juego que más les gusta a los niños incluso hoy en día, porque corresponde a su afán de movimiento, a su afán lúdico. Este libro se ocupa de la primera base y de la formación de base y del entrenamiento con niños de 4 a 14 años. Comprende la edad preescolar (de 4 a 6 años), la edad escolar temprana (de 7 a 9 años), la mejor edad de aprendizaje motor ( de 10 a 13 años) así como la fase de la pubescencia. El libro da indicaciones, explica principios y métodos que faciliten el empleo útil de la multitud de formas de ejercicios y juegos ofrecidos, teniendo ...