Adivina Quién Ruge

Provides examples of animals and things in motion to demonstrate the concept of up and down. Presented in English and Spanish.

Simple text and color photographs show what life is like on a ranch, covering cattle, corrals, roundups, and other topics.

"Provides clues about an owl's physical characteristics, behaviors, and habitats in a guessing game format."--From source other than the Library of Congress

Un canto a la libertad, el amor y la amistad. Este libro recrea la vida de Hipatia de Alejandría, una figura capital de la antigüedad y protagonista del filme Ágora, de Alejandro Amenábar. Estuvo versada en filosofía, matemáticas y astronomía, pero su clase magistral para la historia fueron su sed de vida y de conocimiento, así como el valor y la entereza para defender sus ideales de convivencia y tolerancia. Hipatia fue un espíritu libre, una voz incómoda a causa de la férrea voluntad de llevar una vida plena como mujer sin pedir perdón por ello, aunque debiera pagar por ello el...

Born in 1452, Leonardo da Vinci is still, today, considered one of the most talent people to have ever lived. From his world famous paintings and drawings, such as the Mona Lisa and the Vitruvian Man, to his ingenious inventions of the parachute, the helicopter, and the military tank, da Vince was always a step ahead of his time. Discover the origins of a man who refused to be defined by just one vocation. Whether science and engineering or architecture and art, Leonardo da Vinci was the ultimate Renaissance Man.

For young people, it can be easy to confuse what one wants as opposed to what one actually needs. This thoughtful resource elucidates the basic concepts of wants and needs and how they fit into the economic landscape. Readers will be asked to consider the different priorities of cultures from around the world, offering a more global overview, as well as a perspective on what people needed in the past. The text nudges the idea of needs further with a discussion of emotional needs and what those might be.

Este libro intenta indagar sobre las garantías de aquellos compuestos que se consumen para mantener o mejorar la salud. Por un lado, describe los fundamentos detrás del desarrollo de agentes terapéuticos descubiertos mediante la metodología científica, y la complejidad que rodea su síntesis, análisis y controles efectivos para su puesta en circulación en el mercado. Por el otro, cuestiona la legitimidad de las afirmaciones acerca de los beneficios de los productos naturales o ecológicos, denominados nutracéuticos, que se nos ofrecen como suplementos de alimentación y la salud. El...