Quién soy yo en realidad y otros enigmas planetarios

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 moneys 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.

En estos materiales se ofrecen ideas, técnicas, ejemplos y fundamentación teórica para el tratamiento en el aula de los contenidos procedimentales en tres campos: comprensión lectora, resolución de ejercicios y problemas y actividad investigadora. Los ejemplos que se incluyen de todos los niveles de la ESO y de las cuatro materias integrantes de las Ciencias de la Naturaleza, permiten al profesorado sacar ideas para realizar su propia programación.

Reveals the truth about cannibalism in pre-Columbian America, avoiding sensationalism and opting for historical accuracy on a matter that has been subjected to all sorts of misinterpretations as well as mistaken beliefs.

Learn about some animals that are in danger of becoming extinct and what people are doing to Save the Animals.