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 ...

La Asociación Española de Sexología Clínica ha escrito los textos de esta colección con el fin de responder a la curiosidad de los niños y enseñarles de una forma natural, adaptando cada cuestión a su edad y explicando las cosas de un modo sencillo, aunque riguroso, acompañado además de graciosas ilustraciones. Este libro responde con seriedad a las falsas creencias sobre el sexo, indaga en los distintos tipos de familias y enseña a enfrentarse a un posible abuso sexual.

Rudy can't find his favorite sweater. He's looked everywhere: inside the house, outside, and in the apartments upstairs and downstairs. In the kitchen, in the bathroom, here, there . . . where could it be? This enchanting story has flaps, pages with cutouts, and numbers to count.

Estimadas mujeres: Si están de bajón sentimental, la autora las invita a sacarse el pijama y tomar nota de los cinco perfiles de hombres de los cuales hay que tomar distancia. (Si Cupido no ha podido con ustedes, tomen armas en el asunto y puedan ustedes con él). En estos tiempos de conquista indefinida es necesario poner en práctica el GPS femenino que llevamos dentro para poder detectar a tiempo a los hombres que están "flojitos de papeles" porque, a corto plazo, éstos solo les indicarán que van a ser cazadas como un ratón con el solo fin de abrirles nuevamente heridas de...

Examines The Properties Of Matter, The Use Of Energy From Gasoline Or Batteries, And Various Other Sources Of Energy.