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.

Learn about the Earth and the Moon with this engaging Spanish science reader. With easy-to-read text, this book teaches students important scientific concepts and vocabulary including the phases of the Moon, the movement of the Earth around the sun, and the rotation of the Earth. Aligned to state and national standards, the book contains nonfiction text features like an index, a glossary, captions, bold font, and detailed images to keep students connected to the text. A hands-on science experiment helps students apply what they have learned and develops critical thinking skills.

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...

Esta serie cuenta con un grupo de pequeños extraterrestres guardianes de la naturaleza que salen de su planeta en la búsqueda del mayor contaminador del universo, el perverso Zirt Zlunder. El se escapa y viene a vivir en el planeta Tierra. Este libro empieza, la saga de los Pequeños Guardianes alrededor del universo detrás del temible Zirt Zlunder, el mayor contaminador de todas las galaxias. Ellos le persiguen en un intento de detener a Zirt Zlunder antes de que llegue a Tierra para contaminar aún más nuestro planeta.

Learn how technology has improved lighthouses over time with this book that features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.