Exploremos las rocas sedimentarias (Exploring Sedimentary Rocks)

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.

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.

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.

In what ways are the branches of government like a basketball game? How can a school yard game's rules liken themselves to a constitution? Through engaging analogies and introductions, our new Spanish-language government series gets English language learners ready for election 2008. Correlated to the fourth and fifth grade social studies curriculum, My American Government introduces students to how our government works. Students learn about the U.S. Constitution, the branches of government, citizens' basic rights, and how we elect our leaders.

En 1792, una sanguinaria bestia hace estragos en la Hoya de Castalla, donde cunden rumores sobre una extraña epidemia. El botánico A.J. Cavanilles recorre la región en busca de un antídoto contra la hidrofobia mientras elabora un catálogo de plantas por encargo de Carlos IV. Para poder adentrarse por zonas escarpadas llenas de peligrosos precipicios toma como guía a un avispado muchacho del lugar, el pícaro Ángel Taras, que servirá como contrapunto del ilustrado. Iniciada la expedición, pronto serán testigos de siniestros acontecimientos: un cadáver incorrupto al ser desenterrado...

¿Problemas con la sintaxis y la morfología? El análisis de oraciones no tendrá secretos para ti después de practicar con estos 99 ejercicios resueltos hasta el más mínimo detalle.Si quieres dominar de forma rápida y sencilla todo lo que necesitas sobre el análisis morfosintáctico de oraciones, ¡ésta tu guía! La autora es una psicóloga experta en el tratamiento de dificultades del aprendizaje con una amplia experiencia docente. CONTENIDO 10 Preguntas de clasificación de oraciones según la actitud del hablante. 10 Preguntas de análisis morfológico de oraciones. 79 Preguntas de ...

By day, Zoe Zhang is a fourth-grade bunny who loves reading books and playing soccer. By night, she's Robin Hoodie, a hero bandit who steals from the greedy and gives to the poor. When a dishonest city official bullies her family, she and her band of Merry Mates fight back. Kids will be captivated by this fast-paced adventure story that will appeal to reluctant readers. This short, 32-page chapter book features colorful, lively illustrations to capture the attention of kids who enjoy stories about underdog superheroes.