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.

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 man who saved the lives of his PT-109 crewmen during WWII and became the 35th president fought-and won-his first battle at the age of two-and-a-half, when he was stricken with scarlet fever. Although his presidency was cut short, our nation¿s youngest elected leader left an indelible mark on the American consciousness and now is profiled in our Who Was¿? series. Included are 100 black-and-white illustrations as well as a timeline that guides readers through this eventful period in history.

Venecia, diciembre de 1882. La deslumbrante e impetuosa Lou Salomé concierta una misteriosa cita con Josef Breuer, reputado médico vienés, con el objeto de salvar la vida de un tal Friedrich Nietzsche, un filósofo alemán casi desconocido pero de brillante porvenir, que manifiesta una crisis profunda de tendencias suicidas tras la relación que ha mantenido con Lou Salomé y Paul Rée. El doctor Breuer, influido por las novedosas teorías de su joven discípulo Sigmund Freud, acepta la peligrosa estrategia que Lou le propone –psicoanalizar a Nietzsche sin que éste se dé cuenta–, sin ...

Full color, full-page photographs throughout with straightforward and engaging text, the I Want to Be... series is an appealing and engaging introduction to a broad spectrum of occupations. The I Want to Be... series gives young children a realistic insight into the working day of adults. Easy-to-read captions and color photographs of women and men from different cultures help children understand what's involved in each occupation. Young readers learn to respect the importance of doing a job well and appreciate the contributions these workers make to our life and the world around us. These...

Filled with tricks and treats, fun and food, Halloween is a day that children look forward to. At one time two separate festivals, the traditions of each gradually blended into the holiday we now celebrate on October 31.