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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...

"Swing" into place value as you learn about the fascinating spider monkey! This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning place value easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section provides additional learning and practice opportunities. Engage students with this...

Los libros considerados clásicos no muerden ni son soporíferos. Este libro supone una invitación a los espíritus curiosos a que comprueben que uno puede leerlos y disfrutar con sus propuestas: basta con liberarse de prejuicios y atreverse a emitir opiniones propias, por extrañas que parezcan. El autor, mediante un personal paseo en compañía de dos héroes (Héctor y el Cid) y dos antihéroes (Henry Fleming y Bartleby), protagonistas de cuatro clásicos, reflexiona sobre los personajes literarios con la intención de contagiar su pasión por la lectura de un modo sencillo y riguroso....

Get readers excited to learn about the various technological innovations that have occurred throughout history--and what could be possible in the future! Through informational text, interesting and intriguing facts in conjunction with vivid images, diagrams, and charts, readers will learn about miraculous inventions such as holograms, 3D printing, virtual reality technology, personalized medicine, and bionic body parts. Throughout this Spanish-translated nonfiction title, readers will be engaged and encouraged to imagine the next big technological innovation that could change the world! This...