Energía del viento

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Have you ever seen a skyscraper that is shaped like an elephant? How about one that looks like waves? Students will learn how to measure area while engaged in reading about the world's coolest skyscrapers! This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...

Este libro no contiene las memorias de Hernán Levy ni es tampoco una autobiografía. Es un Testimonio conjunto de relatos sobre eventos que le han pasado y que cualquiera calificaría de increíbles. ¿Qué posibilidades hay de encontrarse cara a cara con el arquitecto del Memorial a las Torres Gemelas, en NY, y que él mismo te explique in situ por qué lo diseñó así? ¿O de conocer al Sultán de Malasia, que le abriría las puertas para competir en la carrera de autos antiguos más deseada del mundo? Esas y muchas otras historias son las que narra este ingeniero amante de la aventura;...

The crustacean subphylum can be broken down into decapods, amphipods, copepods, and other types. This title offers readers from grades one through four comparisons between the needs and roles of different crustaceans, which will allow readers to understand the subphylum’s importance. Readers will recognize and expand their knowledge about familiar species like the lobster and the shrimp, while being introduced to the likes of the wood louse and zooplankton. Dynamic photography and methodically organized information will help readers examine the many sizes, types of limbs, and other features ...

París. Año mil cuatrocientos. Robin, un muchacho, pasa a formar parte de una banda de maleantes que planea el robo del Santo Grial. El chico no se imagina que esta será la gran aventura que cambiará totalmente el curso de su vida. ¿Adónde le conducirá este apasionante peregrinaje? Una novela de aventuras en la que se muestra la necesidad de honestidad y ética.