La Declaración de Independencia: Read-Along eBook

En 2007, una editora recibe un paquete remitido por alguien que se hace llamar Comte de Ville, y que desea permanecer anónimo. Se trata de un dossier encontrado entre las pertenencias de Bram Stoker, que han sido subastadas y han circulado de mano en mano. El dossier consta de una serie de cartas, documentos y recortes periodísticos, y del diario personal que Stoker escribió durante el año 1888. El lector irá descubriendo poco a poco que el dossier puede ser la respuesta a las preguntas aun abiertas sobre la siniestra figura de «Jack el Destripador», y que la clave del asunto la tenía ...

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. Theyll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Dont worry, theyll be happy to learn that (hopefully) we have millions of years left!

"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 the film Jurassic Park. Take a trip through dinosaur time to meet these deadly dinosaurs face-to-face: The Variraptor had pointy teeth with grooves like steak knives to saw through meat! The Draeomaeosaurus was the first raptor ever discovered. It had a very large brain! The Microraptor was ...

From war and death to school and gender equality, the Sociedad series discusses many serious issues in a way that can be easily understood by children. Although many of the situations and examples are specific to Mexico, these books can be applied to a general readership, particularly one of Hispanic origin. Reflecting on modern sciences, particularly biotechnology—from its limitations to its advances—this perceptive study answers many questions concerning cloning and genetically modified organisms, such as Why do scientists work in these arenas? What are the benefits of this technology?...