Barcelona XXI siglos

Charles Darwin es ya un hombre mundialmente famoso y polémico por su teoría sobre la evolución de las especies cuando, en 1865, decide escribir para sus hijos el relato del viaje que, con 23 años de edad, realizó alrededor del mundo a bordo del Beagle. Un viaje que cambiará su visión de la naturaleza y le hará comprender que todas las especies de plantas y animales están relacionadas y tienen un origen común. Durante cinco años, Darwin recorrió lugares llenos de contrastes, como la selva tropical de Brasil y la cordillera de los Andes, la Tierra del Fuego, las islas Galápagos......

Presents the life story of the Mexican-American labor leader who helped achieve justice for migrant farm workers by creating a union to protect their rights.

Groups of American Indians had been living in the Texas region for thousands of years when American settlers decided to expand westward. This captivating book has been translated into Spanish and explores the history of American Indians in Texas and how each group found different ways to live in the region they inhabited. Readers will learn about a variety of tribes, including Karankawa tribe, Jumano, Caddo, Lipan Apache, and Shoshone and discover how they struggled to survive European colonization, the Indian Removal Act, and American expansion. Other topics include the Dawes Act, Indian...

There are one, two, three, four, five dogs to walk. But there is only one dog walker. Collect data on dogs, their leashes, and their names! This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning how to collect data easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section provides...