El eco del silencio

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

This Book Talks About How Everyone Has Problems And How Most Problems Have Solutions. How It Is Important To Stop And Think, Get All The Facts , And Be Better Prepared To Solve A Problem When It Happens To Them. Complete K-5 Social Skills Collection. Paired With A Fiction Social Skills Title.

Who's on the steam train today? What's happening at the station? Find out by lifting all the flaps in this delightful board book. There are lots of things to spot and a few hidden surprises along the way.

¿Sabías que la gente puede excavar y utilizar el calor de la Tierra para producir energía? Esta energía geotérmica puede alimentar tu computadora y calentar o enfriar tu hogar. Pero, ¿cómo se obtiene exactamente? ¿Y cuál es el impacto sobre el medioambiente? Lee este libro para aprender todo sobre la energía geotérmica. Did you know people can dig underground and use Earth's heat to make energy? This geothermal energy can power your computer and heat or cool your home. How exactly do we get it, though? And what is the impact on our environment? Read this book to find out all about...