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...

Land has many different characteristics. It can be hilly, rocky, grassy, narrow, and dry. Or, it can be flat, smooth, sandy, wide, and wet! This Spanish book introduces students to the concept of landforms. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning...

El 13 de mayo de 1994, casualmente cuando la República de Sudáfrica festejaba la histórica victoria de Nelson Mandela en las elecciones presidenciales, Hernán Luis Biasotti arribó al puerto de Ciudad del Cabo. Realizó el viaje navegando completamente solo a través del Atlántico Sur desde Buenos Aires, sin escalas y sin apoyo ni ayuda externa de ningún tipo. El Eos II, su velero de ocho metros de eslora, carecía voluntariamente de motor auxiliar, piloto automático, medios de comunicación, instrumental satelital y otras facilidades que ya eran de uso habitual. Sin pretender emular a ...

Sofía and her friends accuse someone of theft based on his appearance, but when the truth comes out, they learn a lesson about passing judgment based on superficial traits.

¿Cómo sobrevivirías en un lugar donde solo hay pobreza y arena, si tu hermano se ha marchado en una patera y tu padre ha muerto de tristeza, cuando tu madre se ha visto obligada a casarse con un hombre que os maltrata a los dos? Me llamo Áhmen y esta es mi historia.