Amigos en la Granja

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

Una obra dedicada a la vigencia del pensamiento del filósofo escocés David Hume debería empezar sospechando de lo que llamamos filosofía, para terminar dudando de la propia validez de los principios morales. Fiel a su estilo claro y conciso, Felipe Martínez Marzoa resume las aristas de este filósofo de la sospecha.

Universo is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

Audisee® eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! ¿Qué tienen en común una tortuga marina, una iguana y una pitón? ¡Son todos reptiles! Conozca las características que comparten todos los reptiles. What do a sea turtle, an iguana, and a python have in common? They're all reptiles! Learn about the characteristics that all reptiles share.