Los estados de la materia — Los líquidos

A bilingual collection of humorous and serious poems about family, nature, and celebrations by a renowned Mexican American poet.

In every student book you will find: Extensive speaking, pronunciation and vocabulary sections Thorough grammar sections with clear examples and practice Comprehensive listening activities with scripts Contemporary, engaging reading materials taken from authentic sources Writing Banks with the chance to practice different writing styles And finally, the Review and Practice pages after each unit bring all the learning activities together ActiveBook is a complete digital version of the Students' Book on one CD. It is a convenient and simple tool with easy navigation and zoom facility. Videos...

This fascinating narrative gets under the skin of the world’s tallest buildings! How many people are involved in creating a skyscraper? What environmental factors come into play? What does it take for a skyscraper to function? All these questions and more will be answered as we visit the skyscrapers from New York to Malaysia to China. Students will gain a deeper understanding of skyscrapers and how they shape our world.

Los ríos son capaces de encumbrar o arruinar civilizaciones enteras, dividir culturas o unirlas, y proporcionan pistas decisivas sobre el origen del ser humano. Sumérgete en la apasionante historia de Egipto a través del NILO, conoce a los príncipes bandoleros del RIN, asómbrate con la rica diversidad del AMAZONAS o con las sagradas aguas del GANGES. Descubre qué secreto se esconde en el fondo del río AWASH, cómo el ZAMBEZE cambió África para siempre o por qué casi cualquier canción de éxito se remonta al MISISIPI. Averigua el papel crucial del TÁMESIS, el YANTSÉ y el TIGRIS y...