La Energía Solar (Solar Energy)

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.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Un diccionario único para iniciarse en el mundo de las palabras y su significado. Básico, porque además de ofrecer más de 30 000 definiciones claras y sencillas con ejemplos en las palabras más difíciles, es la herramienta perfecta para aprender a usar para siempre un diccionario. Con prólogo de Antonio Mingote, miembro de la Real Academia Española.

Learn about the different places that people call home--from apartments to cottages and castles to farmhouses. With bright, vivid photos and easy-to-read informational text, this Spanish-translated nonfiction title introduces readers to different cultures' definitions of "home."

The United States grew rapidly from the time of the Louisiana Purchase to the building of the Transcontinental Railroad. All of this expansion came at the expense of Native American populations that had either lived in the region for centuries or been forced there from ancestral homes in the East. Tribes memorably fought on their own and together in an doomed effort to retain the land and a lifestyle that had long sustained their families. This book outlines some of the major conflicts of the Westward Expansion, and of the treaties and were signed, and often broken, by representatives of the...

What does it mean to be a good citizen? Full-page, color photographs accompany real-life examples of good citizenship that young readers will understand, relate to, and be inspired by.