Agujeros negros (Black Holes)

Practice nonstandard measurement at the zoo! This exciting, Spanish-translated title encourages readers to practice measuring their favorite zoo animals, such as elephants, giraffes, pandas, and more. A gorilla weighs the same as three men! When a cheetah runs, its stride length is the length of three men! An elephant weighs the same as three pickup trucks! Vivid images, fun practice questions, early STEM themes, and helpful mathematical diagrams make nonstandard measurement entertaining and easy for children to understand.

In this book, children learn how we can tell if something is shiny or dull and which materials have these properties.

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.

El Frente Polisario pretende crear un estado independiente en el Sahara Occidental. La comunidad internacional no puede aceptar una idea asi. Ese pretendido estado, situado en el limite occidental del Sahel, seria penetrado con gran facilidad por Al Qaeda en el Magreb Islamico junto a sus grupos secuaces dedicados a actividades criminales internacionales organizadas. Frente a ello la propuesta del Reino de Marruecos de un Estatuto de Autonomia, se ofrece como la mejor solucion, especialmente desde la perspectiva de la seguridad internacional, y responde a los anhelos de la poblacion Saharaui. ...