El Movimiento por los Derechos Civiles en Estados Unidos (American Civil Rights Movement)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

California grew by leaps and bounds between the Gold Rush and 1900. People from different backgrounds emigrated to California from across America and around the world in search of a new life. This primary source reader focuses on immigration in California from the time of the Gold Rush to the end of the nineteenth century. Primary source documents allow students to see different points of view, and help students look at the world and current issues with a historical lens. This Interactiv-eBook builds literacy and social studies content knowledge through the use of intriguing primary sources...

An elementary introduction to the workings of the human body, the skeleton, skin, circulation, and nervous system.

El estudio ofrece un análisis del significado, la composición y la fortuna del Libro de retratos de Francisco Pacheco, obra manuscrita que representa un caso único dentro del Siglo de Oro español en su doble vertiente artística y literaria. En él se recogen los retratos y los elogios de humanistas y personajes destacados de la época, en una galería de dibujos realizados a lápiz negro y rojo, donde destacan sobre todo, los intelectuales de Sevilla. Muestra además, una visión más completa de su autor, situándolo en el centro de la vida cultural española y europea.