Harriet Tubman

What did people use to buy things before money was invented? Where is money made? Find out in this inviting book that informs readers about coins, paper money, the Federal Reserve, exchange rates, and checking accounts. Featuring a timeline of money's history, detailed photos, stimulating facts, clear, informational text, and a glossary that will assist in improving vocabulary, this Spanish-translated nonfiction title will keep readers engaged from cover to cover.

Read Along or Enhanced eBook: Did you know that most animals in the world don't have backbones? Learn more about invertebrates in this engaging, Spanish-translated nonfiction book. Readers will learn all about mollusks, arthropods, arachnids, and crustaceans while being stimulated from cover to cover with its detailed images and charts, intriguing facts, and informative text.

El autor aborda el papel del arte en nuestra sociedad, tratando de averiguar qué convierte algo en obra de arte, qué sentido tiene el compromiso artístico y cuáles son los problemas que hoy podría abordar. Analiza la revisión del compromiso artístico a partir de la década de 1970, cuando el arte asumió la defensa de reivindicaciones muy diversas -de ecologistas y de colectivos marginados (por género, cultura o enfermedad)-, y también la crítica de los medios de comunicación, del urbanismo y de los mecanismos de participación democrática, así como laa crítica de la propia...

La Cátedra Alfonso Reyes del Tecnológico de Monterrey presenta este libro como un espacio de vanguardia orientado a la promoción y la reflexión sobre las Humanidades. Considera fundamental abordar el tema de la vigencia y los alcances del Humanismo renacentista y su relación con las llamadas Nuevas humanidades y los Nuevos humanismos. Así inicia este libro, celebra el XXII aniversario de la Cátedra con una mesa sobre el Humanismo en Reyes, en la que se reúnen a tres reconocidos reyistas: Liliana Weinberg, Coral Aguirre y Javier Garciadiego.

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

Did you know that the first wheel was not invented for transportation or that the system used to create computers was based on the functionality of a sewing machine? In a fun way, this book teaches the history behind inventions that have changed the way we live, from Ancient Mesopotamia to the present. Important details appear at the bottom of each page, including the name of the inventor, the time period, and the place where it occurred.