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 ...

Carmelio the kangaroo, about to leave his mother's pouch for the first time, has two special surprises waiting for him.

La contaminación del medio es, sin lugar a dudas, una preocupación de quienes habitamos este planeta, aunque con frecuencia no sepamos lo que opinan los divulgadores de la ecología. Planeta azul, planeta gris ofrece, a través de un relato ágil que se desarrolla en una escuela preparatoria o de educación media superior, las diversas formas de contaminación que afectan nuestro entorno. Mónica Lavín Maroto es una destacada escritora. Estudió la carrera de biología en la Universidad Autónoma Metropolitana-Xochimilco y trabajó en el Instituto de Ecología. Ha sido colaboradora de las...

In order for any democracy to function well, understanding how and when to compromise is a necessity. This book introduces students to how compromise makes governing possible. Using examples of how compromise works in their own lives, students will gain a better understanding of how compromise work on a larger level. Conversely, readers will also learn that compromise may be the wrong course of action in some situations and that some issues are of such critical importance or high moral worth that standing firm is appropriate.

El gran poeta romántico español del siglo xix nació en Sevilla y murió en Madrid. Esta antología de sus Rimas pretende acercar a los lectores más jóvenes una particular propuesta que sigue un itinerario existencial. Se trata de un recorrido temático, con principio y fin, por los grandes temas de la vida y la poesía de Bécquer. En sus páginas, deliciosamente ilustradas, nos encontramos versos tan populares como “Volverán las oscuras golondrinas”, o “Al brillar de un relámpago nacemos”. No son las Rimas de Bécquer poesías estrictamente infantiles, aunque nadie discute su...