¿Por qué hibernan los animales? (Why Animals Hibernate)

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

Mundo insecto será la guía para enseñarte que a esos animales los necesitamos para sobrevivir. Y la razón es simple: son el principal medio de polinización. Además, este libro trae una completa clasificación de esos pequeños seres.

The reflection that is presented in this book is born of direct contact with schools that have a multicultural public, its dialogue with the faculty and pupils of these schools, and of the queries raised by its research in intercultural education.

Stephen F. Austin grew up to become known as the Father of Texas. Readers can learn about his interesting and incredible life in this appealing biography that has been translated into Spanish and highlights both Austin's life and Texas history. Through vivid images and illustrations, supportive text, an accommodating glossary and index, and fascinating facts, readers will learn about Texas pioneers, the empresario system, Freemasons, and how Austin became such an important figure in Texas history.

En la Barcelona de 1920 un joven abogado y periodista monárquico entra en relación con personajes muy diversos: una cabaretera agredida que no dice todo lo que sabe; un líder anarquista que vacila entre el pactismo y la violencia; un general recién llegado a la ciudad para imponer el orden sin contemplaciones, y una bella y adinerada condesa decidida a mantener su independencia...De la mano de Pablo Vilar nos desplazamos desde las grutas de los miserables en Montjuich a las fiestas de alta sociedad en el Ritz o el Laberinto de Horta, y de las comunidades ácratas a los juzgados donde se...