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.

Born into slavery, Frederick Douglass relied on his own determination and ingenuity to carve a path to freedom. Once free, he dedicated his life to improving the lives of others and fighting for justice and equality. This inspirational Spanish biography uses primary sources to engage students in learning about the fascinating life of Frederick Douglass. Students will build their literacy skills as they are immersed in social studies content. Text features include a glossary and an index to increase comprehension and academic vocabulary.

Excite your fifth grade students with this captivating nonfiction title, which explores the many technological advancements made throughout history. The interesting and intriguing facts found within the informational text, along with vivid images, diagrams, and charts, inspire curiosity in readers as they learn about miraculous inventions like the hologram, 3D printing, virtual reality technology, personalized medicine, and bionic body parts. This Spanish-translated nonfiction title will engage and encourage readers to imagine the next big technological innovation that could change the world. ...

Sumamos ya, con esta quinta edición de Bogotá contada, 45 escritores que han visitado nuestra capital. Al cabo de un lustro y cinco volúmenes se hace evidente que esta ciudad, lejos de agotarse, va desdoblándose en cada texto, revelando nuevas facetas. Como en un juego de espejos enfrentados, cada visión de Bogotá comparte algo con las otras pero se muestra en todas las particularidades, todos los matices que tiene la mirada de cada escritor. Autores: Pedro Mairal, Francisco Hinojosa, Margarita García Robayo, Dani Umpi, Ricardo Sumalavia, Yolanda Arroyo.

Invierno, primavera, verano y otoño--las estaciones son uno de los ciclos más familiares de la naturaleza. Pero, ¿por qué cambia el clima? Aprenda por qué los patrones climáticos cambian a lo largo de las estaciones. Winter, spring, summer, and fall--the seasons are one of nature's most familiar cycles. But why does the weather change? Learn why weather patterns change over the seasons.