¿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.

In this biographical book, young readers will learn about the brave life of Harriet Tubman. Readers will discover how Tubman bravely escaped from her life as a slave to cross the Mason-Dixon line into freedom and how she helped hundreds of other slaves into freedom through the Underground Railroad with the help of abolitionists. The vivid images, stunning facts, and supportive text work in conjunction with the helpful glossary, index, and timeline of Tubman's life to give readers an engaging experience as they move from cover to cover. This book has been translated into Spanish.

Winter, spring, summer, and fall. Each season has its unique identifying features as well as its exciting activities. Readers will become well acquainted with these as they learn about the four seasons from this beneficial book. They'll also decide which is their favorite season. Thoughtfully chosen photographs correlate with the achievable text and illustrate the characteristics of each season.

Voces ancestrales, campesinas, cefeticultoras, constructoras de identidad colectiva transgeneracional en Veracruz hablan de su combativa vida común en torno a agrupaciones políticas, instituciones extintas del Estado mexicano (INMECAFE), movilizaciones sociales de los ochenta del pasado siglo XX, el desarrollo comunitario, el aprendizaje y reforzamiento de conocimientos locales diversos. Episodios de tres municipios narrados históricamente en colectividad subjetiva: Ixhuatlán del Café, Cosautlán de Carvajal y Amatlán de los Reyes. Relatos micro y macro de VIDA A.C. y su transformar las ...

El famoso escritor Cósimo Herrera, eterno candidato a un Nobel que no llega nunca, decide retirarse a Ribanova, una pequeña ciudad de provincias apartada y brumosa. Allí conocerá a Luisa, una muchacha veinte años más joven, y que desde el primer momento sentirá por el forastero un amor tan apasionado como imposible.