Experimentos para todas las edades

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...

Though few may know his name, his achievement as the first European to discover San Diego Bay and many other areas on the California coast enshrines his name in the annals of American history. This exciting volume tells Cabrillo's story from an unknown soldier to the intrepid conquistador, crossbowman, landowner, shipbuilder, and explorer he became. As one of Hernan Cortes' soldiers during the conquest of Mexico and a founder of Guatemala, his actions loomed large in the future of both South America and North America. By both educating and entertaining, this biography illuminates a...

The author tells about the origin and development of two Spanish romances: The Alfambra woman buried alive and The lovers of Teruel. The first recounts the infidelity of a lecherous woman, the Countess of Alfambra, who betrays her husband by delivering him to his enemy; and whose final dénouement is the defeat of the adulterous couple and their being condemned to death by being burnt at the stake. The Story of the Lovers of Teruel recounts the tragic life of one of the members of the Marcilla family, enamoured of a rich damsel who returned his love. However, her father's refusal to consent...

Following on the outrageous success of Innosanto Nagara’s A is for Activist (now in its fourth printing), A de Activista is a Spanish-language ABC board book written by Grammy Award-winning lyricist and singer Martha Gonzalez and illustrated by Nagara for the next generation of progressives: families who want their kids to grow up in a space that is unapologetic about activism, environmental justice, civil rights, LGBTQ rights, and everything else that activists believe in and fight for. The alliteration, rhyming, and vibrant illustrations make the book exciting for children, calling them...