La tierra y la importancia del agua

Venerado y vilipendiado a un tiempo, Lobachevski se cierne imponente sobre la matemática del siglo XIX. Al igual que sucede a la mayoría de los mitos, el Lobachevski real está oculto por capas de negligencia y desconocimiento. Su fantástica obra, argumentaban muchos, no era otra cosa que herejía matemática, una senda falsa. Lobachevski es una personalidad abrumadora, un soñador empedernido, un hacedor de mundos imposibles pero reales. Lobachevski es, para muchos, una persona desconocida. Este libro cuenta la historia de un hombre sencillo, pero sagaz, obstinado y profundo desde el...

Step inside a studio and learn what it takes to be an artist! This Spanish-translated nonfiction title engages readers through stimulating facts and vivid images and diagrams in conjunction with a brief background on well-known art movements such as Expressionism, Surrealism, and Impressionism, an interview with a real-life artist, a glossary, informational text, an index, and list of useful sources for learning more about art. This 6-Pack includes six copies of this title and a lesson plan.

Decades after the end of the communist regime in Hungary, the author of this book receives a call about the appearance in a file of some documents that may interest him. They contain a surprising secret that will shake him to the ground.

Describes the U.S. Navy, including their vehicles such as jets, aircraft carriers, and submarines, their weapons, and some of the different jobs that members perform in the Navy. Written in English and Spanish.