Primeros Ejercicios de Calculo

Marcos Ana (Fernando Macarro Castillo). Naci&ó en Alconada, una peque&ña aldea de Salamanca, en 1920, en el seno de una familia pobre de jornaleros del campo. Su vida ha estado marcada por una pasi&ón constante en defensa de los oprimidos y los desheredados y una entrega absoluta a su ideal comunista. Desde su primera juventud, luch&ó del lado republicano, durante la guerra civil espa&ñola. Al terminar &ésta, en 1939 fue detenido, junto a millares de dem&ócratas y condenado a muerte. Permaneci&ó encarcelado durante 23 a&ños ininterrumpidos: toda su juventud y la mitad de su vida. En...

Introduce students to American civic values, and the importance of upholding these beliefs. This nonfiction Spanish-translated book encourages readers to embrace equality and responsibility. Primary source images support the text and engage readers to help them better understand the content.

In 1846, travelers heading for California became trapped high in the mountains of the Sierra Nevada. Snowdrifts surrounded their shelters, and food supplies dwindled. How they stayed alive remains one of the most gruesome stories in US history. However, some facts that have come to light recently through archaeological digs will surprise even those who think they know the story. This gripping book, including maps and images of the era, tells the true account of the doomed Donner party.

Thomas Jefferson was a great American who helped the United States win its freedom from England. Jefferson helped write the Declaration of Independence, later went on to become the third president of the United States, and is now featured on famous Mount Rushmore! Readers will enjoy this biography that has been translated into Spanish and includes details of Jefferson's time as a lawyer, his membership in the House of Burgesses, and his role as Secretary of State. The vivid images and supportive text combine with the helpful glossary and index to provide readers with tools for better...