Rcords del mundo animal / Records of the animal world

Sitting Bull first went to battle at the age of 14. He grew to be widely respected for his bravery and insight, and became chief of the Lakota nation in his thirties. By the time he met General Custer at the Battle of Little Big Horn, his courage was legendary. Though he soundly defeated Custer, public outrage at the defeat brought thousands of cavalrymen to the area, where it took four more years before the brave chief would surrender. He was forced onto a reservation where he was later killed when police attempted to arrest him.

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!

Take a trip around the world and learn about the Earth’s different climate zones! Students will learn the difference between climate and weather, and study the characteristics of low-latitude, mid-latitude, and high-latitude climates. This nonfiction Spanish book teaches students important scientific concepts and vocabulary terms as they learn about tropical rainforests, savannas, deserts, grasslands, taiga forests, deciduous forests, and tundra. The colorful images, diagrams, sidebars, and text features will keep students connected to the text. Aligned to state and national standards, the...

Germiniano González Diez nos devuelve una imagen, un trazo, una emoción. A partir de un rastro de milenios nos muestra los rasgos de la vida de nuestros antepasados más remotos, y nos la ofrece en esta obra para que disfrutemos y reflexionemos. Divulgación y emoción recorren a partes iguales las páginas de este magnífico libro escrito por un estudioso apasionado. En su búsqueda, tan personal, Germiniano González no se dedica a catalogar y "reproducir" las pinturas de hace seis mil años, sino que las "reconstruye" a partir de vestigios, las interpreta cuidadosamente; y convierte...