Proyectos reales para explorar la Primera Guerra Mundial y los años 20 (Real-World Projects to Explore World War I and the Roaring ’20s)

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...

Before there was the U.S. Constitution, there were the Articles of Confederation. Readers discover the story behind the first written constitution of the United States—from the factors that inspired its creation to the reasons why it was replaced. The detailed main text is enhanced by informative sidebars and graphic organizers. Historical images, including relevant primary sources, allow readers to immerse themselves in this historical period. Readers are given the chance to thoroughly examine elements of the original document, making them feel like true historians. They’re sure to enjoy ...

Sofía and her friends accuse someone of theft based on his appearance, but when the truth comes out, they learn a lesson about passing judgment based on superficial traits.

Christopher Columbus most likely wasn’t the person to discover the Americas. He wasn’t even the first European to do so! Despite that, his three trips to the Western Hemisphere led to many more European explorers heading in that direction. In this volume, readers familiar with Columbus’s travels on the Nina, Pinta, and Santa Maria can learn who Columbus was beyond his travels. Supported by full-color and historic images, interesting main content turns what readers think they know about the life of Columbus on its head while expounding on an important period in the history of the world.

Se trata de una pregunta que nos inquieta solo de pensarla, tan profundamente dependen nuestras vidas y sociedades del mundo científico-tecnológico de la electricidad. Entre los grandes protagonistas de ese mundo, destaca un serbio que después de estudiar ingeniería en Graz (Austria), emigró en 1884 a América, instalándose en Nueva York; un serbio de imaginación y habilidades descomunales, un excéntrico sin miedo a lo desconocido, que gozaba montando espectáculos para promover sus inventos: Nikola Tesla (1856-1943). Es difícil apreciar cuánto debemos a sus inventos: sus ideas y...

Incluye cuentos, cantinelas, acertijos y actividades - 10 historias escalofriantes... No es solamente un libro de historias: para los listos, hay juegos y acertijos, y para los más diestros ¡10 actividades que realizar! Qué más divertido que dar vida a estos personajes creando objetos que se les parezcan: un móvil, una huevera, un cofre de tesoros, un tablero, una pizarra… El sapo Baltasar, el lobito Lobisón, el monstruo Veotodo, así como Clémentine, Pedro y Alicia… todos estos personajes singulares comparten con nosotros sus pequeños y grandes miedos a través de unas aventuras...