Medida del tiempo en las carreras (Timing Races) (Spanish Version)

Esta nueva entrega de la serie El árbol de la curiosidad recorre distintos periodos de la historia de la humanidad, desde la prehistoria hasta los inicios de la era moderna. Lámina tras lámina se develarán los grandes inventos de la civilización: la agricultura y la ganadería, las armas y las herramientas, la ciencia y la palabra escrita... Cada ilustración es una ventana para conocer los distintos momentos históricos que forjaron nuestro modo de vida y cada lámina está conectada con otras. Así, el lector verá que todos los temas están relacionados entre sí y que la historia...

The United States grew rapidly from the time of the Louisiana Purchase to the building of the Transcontinental Railroad. All of this expansion came at the expense of Native American populations that had either lived in the region for centuries or been forced there from ancestral homes in the East. Tribes memorably fought on their own and together in an doomed effort to retain the land and a lifestyle that had long sustained their families. This book outlines some of the major conflicts of the Westward Expansion, and of the treaties and were signed, and often broken, by representatives of the...

Travel to the 22nd century in this captivating, Spanish-translated nonfiction title that allows readers to discover the future of space. Elementary readers will be fascinated with the possibilities that may await human life in the future. Readers will discover the technology that may be used to one day allow humans to live on another planet, new worlds, alien life, and artificial intelligence. Featuring vibrant photos, images, informational text, a glossary of terms, and a list of helpful websites for more explorations, children will be excited and enthralled as they move through this title....

Jae is about to embark on the greatest challenge of his life—biking 150 miles in two days to raise money for the National MS Society. But after he falls on his first practice race, will he be able to overcome his fear and ride again? Especially appealing to reluctant readers, this short, 32-page hi-lo book features full-color illustrations and a fast-paced story to capture the attention of kids who enjoy realistic fiction stories!