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.

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.

Enter the world of bug builders! Bugs can build structures that are as complex as the ones that we build! Readers will learn about the amazing things tiny creatures such as silkworms and beetles can build in this inviting, Spanish-translated nonfiction title that features detailed photos, riveting facts, informational text, a glossary for vocabulary improvement, and a list of useful websites. This 6-Pack includes six copies of this title and a lesson plan.

Esta imaginativa historia está protagonizada por un adolescente, Héctor, que no solo padece acoso escolar sino que cuenta con la mala fortuna de pertenecer a una familia desestructurada y con muchos problemas. A la mayor parte de estos problemas el protagonista se enfrenta con lógica, pero esta le lleva a varios enredos que se complican tal como van pasando los días, ya que la relación que Héctor establece con los demás es el resultado de los problemas sociales que enfrenta y varios malentendidos que no puede resolver. El protagonista tienen dificultades para desenvolverse en sociedad...

"La máxima obra gramatical y sintáctica de la lengua castellana" Herder presenta la reedición del Diccionario de Construcción y Régimen de la Lengua Castellana, iniciado en 1872 por el lingüista colombiano Rufino José Cuervo, continuado y culminado por el Instituto Caro y Cuervo de Bogotá, y considerado por los especialistas como el mayor monumento gramatical y sintáctico de la lengua castellana. En 8 tomos con más de 8.000 páginas, este diccionario describe las funciones y los problemas gramaticales de cerca de 9.500 voces, define minuciosamente cada una de sus acepciones, y...

From the candiru to the lionfish, there are so many kinds of fish on Earth. While all have different methods of production, the basic life cycle is the same, from egg to spawning swimmers. Readers are introduced to this general cycle as well as the important vocabulary needed to talk about it, such as “fry” and “spawning.” Accessible language and simple diagrams throughout the book provide a way for struggling readers to tackle science curriculum content.