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

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 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.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

Un gigantesco depredador ha destruido el embarcadero de Wala wala, y Bizcoché, Dani y Evan se sumergen en las oscuras aguas del Santuario para descubrir qué es. A bordo de Canelo 1, el sumergible que ha inventado el profesor, explorarán las profundas aguas jurásicas. Verán mosasaurios, megalodones, plesiosauros... ¡y al temibe Depredador X! ¿Podrán escapar? ¡Descúbrelo en esta trepidante aventura!

En este libro con partes móviles para niños, Buz la abeja rezumba por aquí y por allá en busca de un amigo con quien jugar. Habla con caracoles, orugas, escarabajos, hormigas, catarinas, y mariposas pero todo el mundo está muy ocupado.

Ideal for introducing children to great works of literature, this reference helps parents and educators delve into Gabriel Garc�a Marquez's classic books with their young readers. Ideal para introducir a los ni�os a las obras grandes de la literatura, esta referencia ayuda a los padres y a los educadores a rebuscar en los libros cl�sicos de Gabriel Garc�a M�rquez con sus j�venes lectores.

In Planes, emergent readers learn about planes and how theyre used as a mode of transportation. Carefully crafted text uses high-frequency words, repetitive sentence patterns, and strong visual references to support emergent readers, ensuring reading success by making sure they arent facing too many challenges at once.