Energía por dondequiera

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...

Ya sea polvorosa o mojada, suave o flexible, en todas partes hay materia. ÁHasta el aire est‡ formado de materia! Mira c—mo los s—lidos, los l’quidos y los gases cambian de forma en este libro sobre la materia.

Leonard B. Meyer explica en este libro como funcionan los mecanismos de la mente para percibir y entender la musica. Sus paginas constituyen un lucido estudio de la psicologia de la percepcion musical que ha sido profusamente citado por musicologos, compositores y filosofos desde su primera edicion de 1956. Entre sus admiradores figuran Umberto Eco y Enrico Fubini, cuyos comentarios aparecen recogidos en el amplio prologo escrito por el prestigioso compositor Jose Luis Turina, autor tambien de la traduccion. &la" El objeto principal de este ensayo --senala Turina-- es doble: de un lado,...

Universo is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.