Debajo de la Tierra/Debajo del Agua

Rita andaba siempre encogida y arrastrando los pies. Y no era porque le hicieran daño los zapatos, ni tampoco porque le pesara demasiado el abrigo en invierno, no. ¡Lo que Rita llevaba a la espalda y le pesaba tanto era una montaña enorme de miedos, manías y vergüenza! ¡Y se puede hacer tan poco con tanto peso encima!

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...

"En este libro te proponemos un recorrido que no te va a dejar indiferente. Porque no el sólo un itinerario por distintos países del mundo, sino que te invita a adentrarte en la escencia del ser humano...,"--Page [4] of cover.

Learn about the Victorian era while building your knowledge of equivalent fractions! Students will learn fractions while engaged in reading about the innovations of the Victorian era. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy, practical, and fun. The Explore Math sidebars and Math...