Días de Descubrimiento (Discovery Days) ¿Quién cuenta?

This book introduces the reader to the nighttime world of the rat, including its habitat, activities, diet, and the unique things that it does.

Visiting an aquarium is fun. There are many fish, sharks, birds, penguins, sea otters, and other creatures to see. Dive into learning subtraction as you read about the many animals at the aquarium! This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning subtraction easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading...

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...

Tres años después de sus andanzas en Quinteto de Buenos Aires, vuelve Carvalho. Y también vuelve Charo con la intención de orientar el futuro del detective. A pocos meses del final del milenio, Carvalho vive una historia de amor, sectas, espionaje y muerte. Convocado para seguir un curso de espía y reclamado por una extraña mujer que le envía faxes, primero enigmáticos, luego enamorados, Carvalho convive con la sospecha de que ha sido elegido para una finalidad que no puede controlar. Bajo el peso del eterno diseñador del mundo, el poder del dinero, el detective hace suya la ansiedad ...