La Energía Solar (Solar Energy)

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

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.

This unique collection of children's games and songs is an exuberant expression of Colombian culture. The author includes a musical score for each piece, and provides a brief description of its rhythmic and melodic elements. Text copyright 2004 Lectorum Publications, Inc.

El antiguo Egipto fue una impresionante civilización que se desarrolló junto al río Nilo. Gracias al trabajo conjunto de sus arquitectos, obreros, sabios y escribas, fueron capaces de abordar proyectos increíbles que aún hoy perduran: pirámides, esfinges, obeliscos, ciudades, magníficos faros, e incluso una escritura propia, ininteligible hasta hace apenas dos siglos. Nuestra familia protagonista también tomará parte en esta gran obra colectiva.

Learn about the rich history of Mission Santa Inés: how it started, the people who ran it, the indigenous population, and its legacy today.

From Basic Information About Air Pressure To Cloud Formations, This Book Goes On To Explain Violent Weather Conditions And How To Prepare For Them. Also Talks About The Earth's Changing Weather Patterns And Climates And What Role We Play In Those Changes.