Cómo podemos utilizar el tornillo?

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

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

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.

This book introduces the reader to the nighttime world of the rat, including its habitat, activities, diet, and the unique things that it does.

En este libro, Ema Wolf desarrolla con maestría una historia con altas dosis de intriga y humor. Esta novela ya es un clásico de la literatura juvenil argentina. Se tradujo a varios idiomas, recibió importantes premios y una mención especial en la lista de The White Ravens. La elástica Mimí, el Oso, el Mago Jesús y la Gran Rita se separan accidentalmente de su troupe. Una noche de lluvia, justo antes de salir en busca del circo Augustus, encuentran y adoptan a Pedro, un huérfano que ha perdido a sus hermanos. Esta delirante caravana vivirá aventuras desopilantes, encontrará nuevos...

Provides Information About Mammals, Physical Characteristics, Behavior, Mating, And How They Protect Themselves From Dangers.

Whether epic tale or legendary quest, the narrative texts in this series are adapted in a captivating style for each period, allowing the reader to track heroes and share their adventures, discover great civilizations, and learn about world history. The texts are based directly on original works or on a variety of authentic, ancient sources and tales. The narratives are enhanced by specially commissioned illustrations, photographs, and reproductions of ancient artifacts and documents. Mito, historia epica o busqueda legendaria, los textos narrativos de esta coleccion adaptados con estilo...