Energía del viento

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

El Mayflower es un barco que ha llegado a ser célebre en la historia de los Estados Unidos porque en 1620 transportó desde Inglaterra al grupo conocido como "los peregrinos", quienes serían los primeros colonos europeos en establecerse en Norteamérica. Ellos zarparon desde el puerto inglés de Southampton y bautizaron como Nueva Inglaterra a la tierra que los acogió. Como señala este libro, el Pacto del Mayflower designa el acuerdo que los hombres adultos de esta comunidad firmaron a bordo del barco para fijar criterios generales que sirvieran como fundamento para el gobierno de la...

Segunda edición, revisada, de este texto pedagógico, claro y coherente, concebido como un medio para aprender español como lengua extranjera pero cuyas propuestas descriptivas inéditas de la gramática le hacen también interesante al nativo. Su objetivo es acelerar al máximo el proceso de aprendizaje. Obra original que se echaba en falta para poder llevar a cabo una buena labor docente.

Bloomsbury Scientists is the story of the network of scientists and artists living in a square mile of London before and after the First World War. This inspired group of men and women viewed creativity and freedom as the driving force behind nature, and each strove to understand this in their own inventive way. Their collective energy changed the social mood of the era and brought a new synthesis of knowledge to ideas in science and art. Class barriers were threatened as power shifted from the landed oligarchy to those with talent and the will to make a difference.

Yendo un paso más allá de historias bíblicas, este libro a todo color anima a los niños de 5 a 8 años de edad, a detenerse y pensar en el significado de cada oración presentada. Más de cinco docenas de oraciones se incluyen en divertidas historias y son acompañadas con ilustraciones y diseños a todo color. For the first time in Spanish, this devotional book encourages children ages five to eight to stop and think about the meaning of more than five dozen Bible stories. Devotions are drawn from the breadth of scripture and are brightly illustrated for young readers’ pleasure.

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these feathered dinosaurs face to face: The Caudipteryx had feathered arms and a tail that looked like a pom-pom! The Sinovenator may have used colorful feathers to attract a mate! The Microraptor may have used its feathers to glide...