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.

This beginner's guide offers a first glimpse into the natural world of amphibians. This addition to the acclaimed About... series uses simple, easy-to-understand language to teach younger children what amphibians are, how they look, how they move, what they eat, and where they live. With beautifully detailed, realistic paintings, noted wildlife illustrator John Sill introduces readers to a variety of amphibians, from frogs and toads to salamanders and more. An afterword provides details on the animals featured and inspires readers to learn more.

Publicación de 320 páginas que incluye los contenidos prescritos por el Real Decreto de enseñanzas mínimas de 1631/2006 de 29 diciembre y los contenidos recogidos en el Decreto 112/2007 de 20 de julio por el que se establece la ordenación y las enseñanzas correspondientes a la ESO en la Comunidad Valenciana.

Kamo es un chico que acuerda con su madre aprender inglés en tres meses. Para lograrlo se carteará con Cathy,una chica inglesa francamente extraña, que parece vivir en otra época, a juzgar por el estilo de sus cartas y por el ambiente que describe. Sin poder evitarlo, Kamo iniciará una relación postal con ella que cambiará totalmente su modo de ver la vida. ¿Puede el amor viajar a través del tiempo? Un libro que pone de manifiesto la importancia de la amistad y los vínculos familiares.

The history of the feast! After their first harvest in 1621, the Pilgrims at Plymouth shared a three-day feast with their Native American neighbors. Of course, the Pilgrims and the Wampanoag didn't know it at the time, but they were making history, celebrating what would become a national holiday.