¿Por qué hibernan los animales? (Why Animals Hibernate)

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.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

From the Carnival celebration in Ponce to El Yunque National Forest, there's a lot to see and do in Puerto Rico. This island territory lies in the Caribbean. Puerto Rico introduces the state's history, geography, climate, economy, people, and places. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.

Este libro te enseña acerca de la depresión. Aprenderás cuáles son los síntomas, los tratamientos y cómo conseguir ayuda para una persona que padece este mal.

Estaa lleno de imagenes bellas e interesantes que les enseanan a los nianos todo sobre estos animales asombrosos.

Este tercer nivel permite al alumno desarrollar la competencia comunicativa -lingüística, sociolingüística y pragmática- necesaria para desenvolverse eficazmente en ámbitos cotidianos y académicos. En su diseño se han seguido las recomendaciones delMarco de Referencia Europeo. Consta de un episodio introductorio y de seis episodios temáticos estructurados en los siguientes apartados; Secuencias de la vida real. Preguntas de comprensión. Breve juego de rol. Refuerzo de la comprensión auditiva.Encuadre gramatical. Presentación y práctica de los contenidos gramaticales a través de...