Algoritmos: la base de la programación de computadoras (Algorithms: The Building Blocks of Computer Programming)

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

When Nina, Maricela, and Alejandro decide to help some homeless people living near their school in Los Angeles, the issue of homelessness becomes personal when they discover that it is affecting a friend. With help from their 5th grade teacher, they decide to take action and help those in need. This 32-page realistic fiction book features full-color illustrations, diverse characters, and a short chapter format. Capture the interest of reluctant and struggling readers with hi-lo text.

Illustrations and text present the history, geography, people, politics and government, economy, and social life and customs of Arizona, the Grand Canyon State.

Introduces The Life Of The This Spanish Explorer Who Searched For The Cities Of Gold, But Only Found Indian Villages.

Un día cualquiera de 1936 se convierte para Carmen, como para tantos otros, en una terrible pesadilla. Curtida por los amargos sinsabores de la guerra, mancillada en lo más íntimo y donde más duele, se convierte en espía del Servicio Secreto soviético, que desea apoderarse del arma mortífera que Hitler está experimentando en la contienda española.