Preocupación

Nueva traducción, acompañada de un completo estudio introductorio y un amplio cuerpo de notas, de esta obra de madurez en la que Cicerón analiza cuestiones de ética filosófica que, a juicio de su autor, pueden ayudar al lector a hacer más llevadera la tempestuosa travesía de la vida.

Learn all about the law of conservation of mass with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new concepts and vocabulary terms with this nonfiction book that explores the law of conservation of mass in detail. Aligned to state and national standards, this leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.

When we look up at the night sky you can see millions of stars, but what do you think we could see in space if we left Earth? If we could hop into a special ship and blast off, traveling billions of miles away from Earth, we’d see the Milky Way galaxy. In this book, readers take an incredible journey through that galaxy, exploring the universe and learning how it was formed and what will one day happen to these enormous groups of stars. From mysterious dark matter to the black holes at the center of galaxies, readers will also dive into the mysteries of the universe scientists have spent...

In today's chaotic world, opportunities abound for youth to disengage from community and worship. Once this happens, young people often don't come back. The National Federation for Catholic Youth Ministry wrote From Age to Age in 1997 as part of multiple-year response, to increase youth participation in worship. The document sparked national dialogue on how Roman Catholic parishes might best reach out to and involve youth in Catholic worship. From Age to Age revisits the liturgical principles of Vatican Council II and applies them in creative ways. The document provides strategies to help...