Exploremos el ciclo de la roca (Exploring the Rock Cycle)

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.

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.

Simple text and photographs introduce the concept of "skip counting," or counting by groups of a certain number, and present items for practice.

Alexander Graham Bell was always trying to invent new things! In this biography that has been translated into Spanish, readers will learn about Alexander's life as a teacher and inventor of such incredible inventions as the telephone, record player, and metal detector. Colorful images, supportive text, an interesting timeline, and a helpful glossary, table of contents, and index combine to give readers an inspiring look into the life of Alexander Bell.

Desde el Big Bang hasta tu cumpleaños, y (casi) todo lo demás, este divertido y revelador libro cuenta tu historia. Esta es tu biografía (aunque no lo sepas). Este libro te llevará por un increíble recorrido desde el Big Bang hasta tu nacimiento (¡y en menos de lo que tardas en ponerte los calcetines!). Sus páginas te ayudarán a atravesar océanos de tiempo para ir desde el espacio hasta la puerta de tu casa en una aventura que empieza con un gran BOOM. ¿Te apuntas al viaje de tu vida?

Un libro regalo comprometido con la educación y la diversidad. Para toda la familia. Un viaje alrededor de las escuelas del mundo. Conocerás los colegios, las costumbres y realidades de chicos de todos los continentes.