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.

Un libro claro, riguroso y estructurado, adaptado a los contenidos curriculares de Biología y Geología, acompañado de un elevado número de actividades teóricas, prácticas, competenciales e interactivas. Son piezas clave del libro: el enfoque TIC, con vínculos a animaciones y a actividades interactivas y el planteamiento encaminado al desarrollo de las competencias básicas.Incluye como anexos un diccionario científico y un atlas anatómico, de gran utilidad tanto en el aula como para el uso autónomo de los alumnos.

Oil spills have a serious impact on the environment, killing countless wildlife, destroying important habitats, and polluting our water. Readers follow a group of volunteers as they learn about what oil spills do to our environment, what measures can be taken to clean up after oil spills, and ways to prevent future spills from happening.

Martha Ann tiene 12 anos de edad cuando Papa logra reunir el dinero suficiente para librarla de la esclavitud. En 1830, la familia entera abandona el este de Tennessee para comenzar una vida nueva en Liberia. En los dias de mercado, Martha Ann contempla los barcos de la marina britanica que patrullan la costa liberiana para impedir que los cazadores de esclavos secuestren a su familia y amigos y les devuelvan a la esclavitud. Martha Ann decide dar personalmente las gracias a la reina Victoria por haber enviado a la marina. Pero primero tendra que hallar el modo de recorrer las 3500 millas que ...

Enseña a tu dragón a ser paciente. Un adorable cuento infantil para enseñar a los niños sobre las emociones y el manejo de la ira. (Spanish Edition)