Exploremos las rocas metamórficas (Exploring Metamorphic Rocks)

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 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.

Esta obra pretende desarrollar la comprension estrategica del jugador y asi permitirle mejores resultados.

Surveys the life of the American statesman, lawmaker, writer of the Federalist Papers, and first secretary of treasury under George Washington.

How do you truly engage students in learning history? When students make personal connections to the subject, they're much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Introduce students to California's early settlers including John Bidwell, Jim Beckwourth, Jedediah Smith, Sarah Royce, Charley Parkhurst, Kit Carson, the Donner party, and more. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need ...

Firme alegato contra la sociedad patriarcal tradicional, EL SOMETIMIENTO DE LA MUJER es uno de los textos que sentaron las bases de la emancipación de la mujer y su incorporación a la sociedad civil en pie de igualdad con el varón, y que habría de ver sus mayores logros –cuando menos sobre el papel– en el siglo xx. Compuesto por JOHN STUART MILL (1806-1873) entre 1860 y 1861 con la participación de su hijastra Helen Taylor, decidida activista a favor del sufragio femenino y de los derechos de la mujer, lo que da a este ensayo su valor de universalidad y permanencia –nos dice Carlos ...