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.

Más de 70.000 mujeres cada año son engañadas y sometidas a esclavitud sexual sólo en Europa. Este es un dato extraído de los periódicos, pero en esta novela todas esas mujeres se resumen en Polina, una adolescente nacida en Moldavia cuyas ilusiones comienzan a desmoronarse en un tétrico sótano de Estambul. Muy lejos de los sollozos de la pequeña, la historia comienza con la desaparición de los cinco gatos de la viuda Hergueta en un barrio residencial de la periferia de Madrid. Los vecinos rusos resultan los primeros sospechosos, ya que su actitud es huraña y misteriosa. Gracias a...

Amazing things happened in California during the twentieth century. People came from all over the world to settle in the Golden State. Today, it is home to more than 38 million people, and the state's economy is one of the biggest in the world. Explore California's history with this Interactiv-eBook that builds literacy and social studies content knowledge. By studying primary sources like maps, historical cartoons, letters, and images, students will be prompted to ask questions, and encouraged to consider bias and the validity and reliability of sources. Aligned to the National Council for...

Being active is fun, and it makes you feel good. You can run, jump, or play. What are some other ways to be active and stay healthy?

Desarrollo práctico de un programa para apoyo y refuerzo de Matemáticas en la ESO, en el que se ofrecen abundantes ejemplos y numerosos problemas y actividades (con su solucionario correspondiente) para que el alumnado las resuelva y se ejercite en los procedimientos propios del área.