Energía del viento

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

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

Juro lealtad a la bandera (I Pledge Allegiance to the Flag) teaches students about the Pledge of Allegiance. This book uses intriguing primary source images and documents and simple sentences to engage students in reading as they build their social studies content knowledge. For use in the classroom or at home, this Spanish book includes a simple glossary, captions and an index to introduce informational text features to young readers and provide additional reading support.

Un rey y unos inesperados compañeros de viaje emprenden una travesía que los llevará más allá de toda tierra conocida. A medida que navegan por mares que no aparecen en los mapas, descubren que su misión es más arriesgada de lo que habían imaginado y que el fin del mundo es, en realidad, el umbral de una tierra incógnita.

Presents the things that everyone needs, as well as things some people want, and invites the reader to consider his or her own wants and needs.

Biographical And Science-Related Information Examining The Life Of Robert Fulton And His Invention Of The First Steamboat To Work Successfully.