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.

History is full of unsolved crimes, mysterious disappearances, and strange sightings. Readers will discover some of the most well-known mysteries in history--including Amelia Earhart, Big Foot, and the Salem Witch Trials--in this fascinating, Spanish-translated nonfiction book. Featuring detailed images, intriguing facts, and informational text in conjunction with a glossary of terms and an index, readers will be enthralled from beginning to end! This 6-Pack includes six copies of this title and a lesson plan.

Caprichosa, cruel y extravagante, Cleopatra pervirtió a los grandes hombres de Roma, primero a Julio César, después a Marco Antonio, apartándolos de su alta misión y destruyendo sus vidas. Una mujer clave en el escenario político de su tiempo que despertó pasiones que hicieron temblar imperios.

Tiempo de Castañas es una amplia selección de la obra periodística de Arias, donde los artículos están organizados en las siguientes secciones: Los que se refieren en primer y último término a nuestra tierra ( Que trata de Asturias) Aquellos otros que se acomodan al relato breve (Casi unas historias) Se encuentran también textos que van más allá de la actualidad más efímera ( Lo que queda del día a día) No podía faltar un amplio apartado dedicado a las más diversa vida literaria (Miscelánea libresca) Son inevitables las cartas abiertas y los retratos (Semblanzas y Epístolas) ...

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.