La Energía Solar (Solar Energy)

Defines pulleys, 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.

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

Describes How National Parks Are Places Where Land And Animals Are Protected And Are Opened To The Public And Owned By All The People.

Jonnhy vuelve de la guerra. En su pueblo todo el mundo le recibe como a un héroe. pero un día, Jonnhy reúne a todos para contarles su experiencia en el campo de batalla. La guerra no es un espectáculo que echan por la tele. Los "malos" o los "buenos" son conceptos relativas y en realidad, todo el mundo tocado por la guerra, es una víctima.

Popular Holidays Throughout The Year Are Highlighted For The Emergent Reader With Engaging Text And Matching Photos.

En este libro ilustrado para niños, se presentan 7 oraciones en rima, una para cada día de la semana.