Cárceles sin rejas

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Take a trip to New Orleans with a young girl and her family as they attend one of the world's biggest parties: Mardi Gras! Learn all about the history of this fascinating festival as you practice subtraction strategies. This fiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning subtraction strategies relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading...

Un viaje ilustrado a través de los hábitats más sorprendentes de la Tierra, desde bosques y océanos hasta desiertos y polos helados Haz un recorrido por los hábitats más asombrosos y descubre la asombrosa variedad de vida en nuestro planeta. Ilustrado con increíble detalle, Habitats del mundo explora los principales ecosistemas de la Tierra y las diferentes comunidades de animalesy plantas que viven en cada uno. Desde una abundante selva tropical hasta las condiciones hostiles de alta montaña o los polos helados, descubre cómo los animales y las plantas se adaptan a su entorno y...

Jonas y Gregoire son dos amigos de 15 anos. Jonas ve en Suzanne, hermana de Gregoire, el modelo de una juventud revolucionaria y comprometida que a el le atrae mucho. Gregoire ve en la misteriosa Srta. X a su chica ideal. En ambos casos, estos amigos muy pronto aprenderan la decepcionante naturalezade los idolos y el verdadero valor de la amistad. Y cambiaran sus vidas para siempre...