Exploremos los minerales de la Tierra (Exploring Earth's Minerals)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

Early readers learn how to make healthy choices in this Spanish-translated nonfiction introduction to nutrition and eating right. Featuring vivid, colorful photos and simple, informational text, this book teaches children the benefits of healthy eating and encouraged to make healthy decisions.

Durante décadas, los toques y chirridos de la guitarra eléctrica han sido algunos de los sonidos que definen la música popular. Pero tuvo que pasar más de un siglo de esfuerzo e innovación antes de que este instrumento fuera eléctrico. For decades, the blasts and howls of the electric guitar have been some of the defining sounds of popular music. But more than a century of effort and innovation had to happen before this instrument went electric. Learn about the master craftspeople who created the guitar as we know it, the inventors who figured out how to send guitar notes through...

Goya, el más fiel cronista de su tiempo, cede a los apasionados caprichos de tres de sus musas sin medir las consecuencias que estos desatinos le pueden deparar. La condesa-duquesa de Benavente, la duquesa de Alba y la condesa de Chinchón, como el reflejo de la sabiduría, la seducción y la dulzura, tres de los atributos que el pintor más admira en la mujer, resucitan en esta novela para guiar al lector por el languidecer del siglo xviii y el convulso nacimiento del xix. Bajo su mecenazgo paseará por los teatros, plazas, conventos y palacios para profundizar en aquella acomodaticia...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!