365 enigmas y juegos de lógica

Young readers may have heard about the benefits of using and making the most of their resources, but how does that factor into an economic discussion? This thorough discussion defines resources and describes the different types of resources and why some divide them into three categories and others choose four. The book also addresses the concept of scarcity, showing readers how, because all resources have their limits, it is important to use them responsibly and efficiently in a healthy economy.

Versión actualizada de una obra imprescindible. Con más de mil ilustraciones, creada por el artista plástico Mauricio Gómez Morin y textos del historiador Pablo Escalante Gonzalbo, este libro ofrece al lector 120 siglos de historia nacional. Un libro para toda la familia que está realizado con rigor histórico y científico, posee amenidad y es de ágil lectura. A través de él se pueden conocer 120 siglos de historia patria, desde una perspectiva histórica integral, en la que se entrelazan acontecimientos políticos y grandes cambios institucionales con datos provenientes de diversos...

Christopher Columbus most likely wasn’t the person to discover the Americas. He wasn’t even the first European to do so! Despite that, his three trips to the Western Hemisphere led to many more European explorers heading in that direction. In this volume, readers familiar with Columbus’s travels on the Nina, Pinta, and Santa Maria can learn who Columbus was beyond his travels. Supported by full-color and historic images, interesting main content turns what readers think they know about the life of Columbus on its head while expounding on an important period in the history of the world.

Exploración espacial 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.