Inteligencia artificial: computadoras y máquinas inteligentes (Artificial Intelligence: Clever Computers and Smart Machines)

Have you ever wondered where inventors get some of their ideas? This answer may surprise you: sometimes the inspiration comes from plants! Learn how some tiny plants have made a huge difference in the world.

La quinta de Laura es una colección póstuma de novelas cortas de Alonso de Castillo Solórzano, el autor de relatos breves más prolífico del siglo XVII. Compuso cincuenta y seis novelas cortas que se publicaron, de forma casi ininterrumpida, entre 1625 y 1649. Su abundante producción le convierte en uno de los representantes más significativos del género en España. Siguiendo el modelo del Decamerón de Boccaccio, La quinta de Laura reúne a la hija del conde Anselmo y a sus damas de compañía que la entretienen narrando por turno una historia. Sus relatos, tan amenos como diversos,...

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...

Look up at the night sky. What do you see? This Spanish nonfiction reader introduces students to the subject of scientific observation, and teaches students about the things we use to observe and learn about the world around us. Aligned to state and national standards, the book contains easy-to-read text and nonfiction text features like an index, a glossary, captions, bold font, and detailed images to keep students connected to the text. A hands-on science experiment helps students apply what they have learned and develops critical thinking skills.