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.

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.

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.

¡Vroom! Siga leyendo para aprender sobre las motocicletas y sus jinetes. Grandes características como fotografías de color, diagramas y un glosario de fotos ayudan a los lectores jóvenes a navegar esta introducción a la no ficción. ¡Vamos a dar un paseo! Vroom! Read on to learn about motorcycles and their riders. Great features like full-color photographs, diagrams, and a photo glossary help young readers navigate this Spanish-language introduction to nonfiction. Let's go for a ride!

Catorce relatos, instantáneas dolidas y concisas, buscan abrir atisbos hacia el fondo oscuro que comunica el mundo de la infancia con su apertura hacia el mundo adulto, entendiendo por tal el universo del dolor en la época de la guerra civil.

La conjugación alcohol y adolescencia es una preocupación constante que aparece cíclicamente en el interés social. En algunas ocasiones se visibiliza como un problema de orden público, en otros se acentúa como un problema educativo, en otras ocasiones coge fuerza la visión de salud pública. Todas son ciertas, pero parciales e incompletas si no se aúnan todas las visiones en una interpretación más omnicomprensiva del fenómeno del consumo de alcohol juvenil. Ello es especialmente necesario cuando se trata de buscar soluciones o programas preventivos de impacto en la población...

Molecules and atoms can take the form of a solid, a liquid, or a gas. Each state of matter has its own properties. Together, these three states of matter make up most everything in the universe! Learn all about mixtures and solutions with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new concepts and vocabulary terms like solvent, polarity, compound, and solubility with this nonfiction book that is aligned to state and national standards. The leveled text supports students...