Luis de Carvajal de la Cueva

Más de 1000 palabras básicas ilustradas y organizadas por temas, para aprender español con actividades para practicar el vocabulario que se presenta. Consta de 22 unidades. Al final del libro hay un solucionario, asi como un glosario de las palabras ilustradas traducidas a 5 idiomas.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Simple text and photographs show how common shapes can be put together to create new and different ones.

The United States grew rapidly from the time of the Louisiana Purchase to the building of the Transcontinental Railroad. All of this expansion came at the expense of Native American populations that had either lived in the region for centuries or been forced there from ancestral homes in the East. Tribes memorably fought on their own and together in an doomed effort to retain the land and a lifestyle that had long sustained their families. This book outlines some of the major conflicts of the Westward Expansion, and of the treaties and were signed, and often broken, by representatives of the...