Viaje a través de la Vía Láctea (A Trip Through the Milky Way)

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 ...

The idea of the Roaring '20s conjures up images of speakeasies, women with short, saucy hairdos, and hot jazz. Readers will learn about the historical events that define this decade, including the devastating war that preceded it. An explanation about project-based learning will help readers understand how it can help them research their topic in unique and interesting ways. Constructive suggestions offer ideas for projects, while encouraging readers to take their studies in new and interesting directions.

¿Chocolate o vainilla? ¿Dulce o salado? ¿Gatos o perros? Cuando de ciertos temas se trata, todo niño tiene sus preferencias. Desde que existen las mascotas, el debate entre tener un gato y tener un perro ha sonado fuerte durante los recreos y almuerzos en todos los colegios del mundo. ¿Cuál es mejor? ¿Cuál es más inteligente? Este libro presenta los hechos de manera divertida e informativa. A los niños les encantará leer este texto de Nivel 3 para decidir cuál es la respuesta a la pregunta eterna - ¿gatos o perros? NationalGeographic apoya a los educadores K-12 con Recursos del...

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.

El autor y el ilustrador de Los Futbolísimos presentan un nuevo libro de la serie Los Forasteros del Tiempo. Ya sé que suena un poco raro, pero de un tiempo a esta parte no hago más que viajar en el tiempo a través de un agujero negro. Bueno, yo solo no, me acompañan mis hermanos, mi padre y unas vecinas. Esta vez hemos aparecido en el imperio romano, que es una época muy interesante y emocionante, y además hemos conocido a un montón de amigos nuevos; yo, incluso, me he convertido en gladiador y he luchado contra un león. Aunque en realidad lo que de verdad deseo es volver a casa con ...

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.