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

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.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

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.

Febrero de 1808. Las tropas francesas llevan acantonadas en España. Se respiran aires inciertos y nadie sabe cuáles son las verdaderas intenciones de Napoleón. Cuando Franz Giesler, partícipa de una conspiración que mantiene en jaque al Imperio francés, aparece cruelmente asesinado, su hijo emprende un largo y peligroso viaje a través del país en guerra. El rastro de su padre le sumergirá en una trama de proporciones insospechadas, un complejo mecanismo de relojería cuyo eje, un terrible secreto, podría hacer tambalear el futuro de Europa. A lo largo de su búsqueda, desde la...

Find out how tools have helped people hunt, build, and make life easier in this engaging, Spanish-translated nonfiction title. With colorful images, timelines, charts, a glossary to assist with vocabulary improvement, and an index, children will learn how tools throughout time have made such an important impact on life as we know it! Featured eras include the Stone Age and the Industrial Revolution.

Esta es la historia de una familia griega que ve como cambia totalmente su vida con la llegada de la segunda guerra mundial.

Come find out what professional Crime Scene investigators do to solve a crime in this inspiring Spanish-translated nonfiction reader! In conjunction with detailed images and fascinating facts, readers learn about forensic science, criminal investigative evidence, and crime scene searches. This book includes an interview with a real-life CSI and a glossary, index, and list of useful sources.