Exploremos el ciclo de la roca (Exploring the Rock Cycle)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.

Engineers have built some incredible things. But with every new feat, there is failure. Readers will learn about engineering feats and failures like the Titanic, the Hindenburg, the Hoover Dam, and more in this engaging, Spanish-translated nonfiction title. This book features brilliant images, charts, and intriguing facts in conjunction with informational text and mathematics skills to keep readers active and engaged.

Al examinar las Autonom-as espaolas, lo primero que llama la atencin es que han multiplicado el nmero de pol-ticos y de funcionarios necesarios para que funcione -aunque sea mal- el mastodntico Estado autonmico. El principal inconveniente de la autonom-a territorial es su alt-simo coste, no siempre justificable, que se agrava porque la falta de control estatal facilita los despilfarros de los gobernantes de las CC.AA., quienes acaban financindose con una deuda pblica que ha llegado a ser inasumible, y que pone en peligro tanto la supervivencia de la propia autonom-a territorial como la...

Excelente livro de histórias bíblicas infantis. Histórias de criação - Os patriarcas e suas histórias - José, o sonhador - Moisés, sua vida e sua obra - A conquista de Canaã Josué - Sanson, o invencível - O profeta Samuel, os primeiros reis