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

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.

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.

En el mar, el hombre tiene el privilegio de contemplar un paisaje antiguo pero en él se siente realmente un extranjero y descubre que su huella es efímera y ridícula. En épocas de cambios como la que vivimos, aún es posible atisbar retazos de otra mane

Learn all about the incredible things your heart, lungs, arteries, and circulatory system do and how to keep them healthy and strong! With vibrant images and informational text in conjunction with supportive diagrams and stimulating facts, this Spanish-translated nonfiction title introduces readers to basic biology and vocabulary. This 6-Pack includes six copies of this title and a lesson plan.

¿Cómo te sientes hoy? Aprender diferentes sentimientos es fácil y divertido en el libro A Veces me siento/Sometimes I Feel. (How do you feel today? Learning about different kinds of feelings is easy and fun in A Veces Me Siento). Young readers will realize that all the different feelings they experience throughout the day are common! From feeling happy to sad, to silly or mad, cute illustrations demonstrate different feelings in an appropriate way for young children. Simple sentences will have young learners reading along in no time. Learn simple English words and phrases with the...

La rutina nos ayuda a que el día fluya, pero... ¡puede ser complicada! Con este libro se nos hará más fácil a pequeños y mayores. ¡Acompaña a Lola en la aventura de las rutinas! Se han acabado las vacaciones y Lola vuelve al colegio, pero retomar los hábitos no será nada fácil... Solo hay una manera de hacer que todo fluya: ¡establecer rutinas! Descubre los trucos de Lola para que peques y mayores puedan organizarse juntos. ¡Es el momento de disfrutar del día a día en familia!