México ; y, Viaje al país de los tarahumaras

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 historia narra el viaje de un hobbit llamado Bilbo Bolsón (tío de Frodo, uno de los protagonistas principales de El Señor de los Anillos), al que no le gustan las aventuras, a la Montaña Solitaria en busca del tesoro robado por el dragón Smaug años atrás. Todo empieza un inesperado día en el que Bilbo recibe la visita de Gandalf el Gris junto con 13 enanos, entre los que se cuenta a Thorin, Escudo-de-Roble, a cuya familia le fue robado el tesoro. Algunos de los hechos narrados en El Hobbit influirán en los acontecimientos posteriores de El Señor de los Anillos.La inclusión de...

Discover 25 women who challenged the status quo and fought for what they believed in. From all corners of the world, these women show us that barriers are meant to be broken and obstacles can be overcome. Learn about some of the fierce women who persevered in the face of adversity to fight for what they thought was right. Fully translated Spanish text.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of debugging. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how debugging works in the real world. In this book, readers will investigate what's wrong with a circuit and find out how to fix the problem. This nonfiction book is ...