¿Qué le pasa al microscopio?: Resolver el problema (What's Wrong with the Microscope?: Fixing the Problem)

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.

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 ...

Let’s Make a Volcano Spanish Edition. What do you know about a volcano? When a mountain erupts, it explodes! Hot melted rock, called lava, comes out of its top and flows down the side of the mountain! People need to keep away from real volcanoes, but you can have fun making your own volcano!

Hurricanes plague the tropics from June through November. Some years bring just a handful of storms. Other years, meteorologists run out of names because there are so many. In this Spanish title, readers learn how and where these storms form and the dangers they pose to the land and people who live in Gulf and Atlantic coast regions.

In 1848, gold was discovered in California, attracting over 300,000 people from all over the world, some who struck it rich and many more who didn't. Hear the stories about the gold-seeking 'forty-niners!' With black-and-white illustrations and sixteen pages of photos, a nugget from history is brought to life!