Federico y la Caja: Que No Era Fuerte Pero Sabia de Ciencia y de Ecologia

While the Great Depression was indisputably a difficult period in American history, it did lead to certain developments that we still benefit from today. One for the most significant examples of this is Social Security, which helps a whole generation of retired Americans. The book offers a concise description of the Great Depression, including analysis of its causes and its effects. Chapters focus on different aspects of the period, including culture, the arts, and science and technology. The dynamic design displays images of posters and experiences from the Depression era. This informative,...

Take a trip to New Orleans with a young girl and her family as they attend one of the world's biggest parties: Mardi Gras! Learn all about the history of this fascinating festival as you practice subtraction strategies. This fiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning subtraction strategies relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading...

Volumen que incluye ocho cuentos cortos, ideales para leer o contar justo antes de dormir. Cada uno está protagonizado por un personaje fantástico: unicornio, giraluna, duende, alfombra voladora, hada, ballena, elfo... Se mezclan en cada historia la realidad, el sueño y la fantasía.

Magnitud imaginaria, piedra de toque de la famosa «Biblioteca del Siglo XXI» y heredera de la aclamada «Vacío perfecto», es otro ejemplo delirante del genio de Stanis&ław Lem. Artistas que realizan pornografía mediante el uso de rayos X, científicos que cultivan bacterias que se comunican en código Morse y son capaces de predecir el futuro, vendedores de enciclopedias «de cuarenta y cuatro magnetomos» en las cuales está escrita la historia que aún no ha acontecido, inteligencias artificiales que crean obras de autores tan intocables como Dostoievski y que ni ellos mismos se...