La compra de Luisiana (The Louisiana Purchase)

Swamps are one kind of wetland biome. Like other wetland biomes, a swamp’s water must be clean in order for the wildlife in it to thrive. Readers learn the main features of both freshwater and saltwater swamps, as well as where some of the biggest swamps are on Earth. Science curriculum topics such as food chains and conservation make the main content a great complement to classroom learning. Full-color photographs and inset maps aid readers in identifying this interesting biome in the world around them.

If a person were ever face-to-face with a huge, hungry animal with sharp teeth, they probably wouldn’t care exactly what that animal was! But from a safe location, can we tell whether it was a crocodile or alligator that wanted to take a bite? By examining their jaw structure, teeth, and other physical features, we can easily tell these two animals apart! Graphic organizers and amazing images highlight each animal’s habitat and other small differences between the two fearsome creatures, showing readers just what creature is lurking below the waters.

Por primera vez en español se presenta una amplia muestra de la poesía coreana contemporánea. Un cuerpo poético íntimamente vinculado a la naturaleza, cuyo predominio temático con la soledad, la meditación, la contemplación de los misterios de lo cotidiano y del mundo. Poeta sutil, apegado a ciertas formas de la tradición poética coreana, Chong Chi-yong (1902-1950) elabora un rico lenguaje metafórico y simbólico que requiere de la complicidad del lector. Su obra revela a un amante de la justicia y de la belleza, que al tiempo celebra los valores autóctonos en una época de...

1 cola larga tenía Argentinosaurus, 2 garras tenía Deynonichus... Un impactante recorrido desde el 1 hasta el 10, para descubrir cómo eran, cómo vivían y a qué deben su nombre los dinosaurios. Ilustrado por el paleoartista argentino Gustavo Encina.

The Bill of Rights is one of the most important parts of the United States Constitution. Understanding this document is a vital part of understanding the rights we have as American citizens. This informative volume delves into each amendment of the Bill of Rights and looks at the important people and political decisions behind them. Graphic organizers, charts, and primary source documents supplement this already richly informational resource.