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.

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.

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.

Nature is not always kind. Natural disasters like earthquakes and storms can wipe out cities. Entire cultures and their histories are at risk of being lost. When disaster strikes, some people work to save cultural items. They preserve culture for the future! Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process and is perfect for...

A partir de un recorrido por la historia y la realidad actual de la biblioteca escolar en España, José Antonio Camacho Espinosa plantea cuáles son las condiciones que deben cumplir éstas.

Learn how ornithologists are using modern technology to help migratory birds. Created in collaboration with the Smithsonian Institution, this Spanish Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, this Spanish book features a hands-on STEAM challenge that is perfect for use in a makerspace and teaches students every step of the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Discover...

Publicada por primera vez hace treinta aǫs, El mv̤il, primera novela de Javier Cercas, es un absorbente thriller metaliterario que parece contener como en germen la obra entera de este novelista, hoy consagrado como uno de los grandes escritores europeos contemporǹeos. Los temas centrales de El mv̤il -la vocacin̤ literaria, la responsabilidad del escritor y los lm̕ites de su ťica, las relaciones sutiles e inextricables entre lo real y lo inventado- son temas a los que Cercas ha vuelto una y otra vez.