Exploremos las rocas metamórficas (Exploring Metamorphic Rocks)

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.

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.

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Nathalie es una mujer afortunada. Felizmente casada con François, pasa los días rodeada de risas y libros. Un día la pena llama a su puerta: François muere inesperadamente. Nathalie languidece entonces entre las paredes de su casa y se vuelca en la oficina. Pero justo cuando ha dejado de creer en la magia de la vida, ésta vuelve a sorprenderla y revelarse en su forma más maravillosa. La delicadeza es la novela de la esperanza y la imaginación, la novela de ese París fascinante en el que el dolor y la vulgaridad se transforman en poesía. Un libro que querrás tener siempre cerca, para ...

Explore the different types of ecosystems and biomes through this captivating Spanish book, featuring vivid images, charts and graphs, and interesting facts! Readers will be excited as they learn about the tundra, grassland, desert, and temperate forests, as well as riparian and pelagic biomes. A glossary, index, and an engaging experiment are included to help children further understand the content.

An introduction to the night sky, describing major constellations and the planets of the solar system.

Sofía quiere cuidar a todos los animales del mundo. Pero su mamá no cree que Sofía esté lista ni siquiera para asumir la responsabilidad de tener una mascota. Lista o no, cuando llega un gato con hambre y apariencia enferma a la puerta trasera de su casa, Sofía responde. Cuando su mamá descubre a Sofía dándole comida al gato, se rinde y acuerda que una visita al veterinario les dirá si el gato está sano y si es la mascota perdida de alguien. Mientras la veterinaria les presenta a Sofía y los lectores el trabajo importante y variado de los médicos de animales, Sofía aprende cómo...