Exploremos las rocas sedimentarias (Exploring Sedimentary Rocks)

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.

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.

It is Pepe’s first day of school in England, and he is a bit nervous, even though he will be going to the same one as Tom and Lia. His morning brings the first surprise of the day when Pepe discovers that he needs to wear a uniform. He then feels slightly overwhelmed in Ms. Pinkerton’s class when he finds that he understands some assignments but not others. The most interesting surprise of all, though, is when his science teacher brings out his pet hamster and it escapes--with all of the kids hot on its heels. Es el primer día de escuela en Inglaterra para Pepe, y está un poco nervioso, ...

Diego Valverde Villena (Lima, 1967). Magíster en Literatura Inglesa y licenciado en Filología Hispánica, Filología Inglesa y Filología Alemana. Ha realizado estudios de doctorado en las universidades de Oxford, Heidelberg, Tubinga, Chicago y Complutense de Madrid. Profesor de literatura en la Universidad Mayor de San Andrés y profesor visitante en universidades europeas y americanas. Sus ensayos recorren la literatura universal, con especial dedicación a la literatura hispanoamericana. Sobre Álvaro Mutis ha publicado Varado entre murallas y gaviotas. Seis entradas en la bitácora de...

Cuentos, poesias, chistes y 350 adivinanzas (algunas tradicionales y otras inventadas especialmente para este trabajo), constituyen una nueva propuesta que invita a seguir jugando con las palabras.Para todos los gustos y edades, este libro rescata y renueva la tradicion de las adivinanzas. De calles, de nombres y animales, de frutas y verduras, un verdadero maraton para adivinadores.

Elin y su hermano Mario viven en una bonita casa con un gran jardín, la casa que sus padres han logrado comprar gracias a su trabajo y la hipoteca del banco. Un día, el desempleo de su padre amenaza con llevarse todo lo que tienen. Sin embargo, ellos no se van a quedar con los brazos cruzados... Una novela realista que muestra la necesidad de compartir y de estar unidos ante las adversidades.