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.

Read Along or Enhanced eBook: Did you know that most animals in the world don't have backbones? Learn more about invertebrates in this engaging, Spanish-translated nonfiction book. Readers will learn all about mollusks, arthropods, arachnids, and crustaceans while being stimulated from cover to cover with its detailed images and charts, intriguing facts, and informative text.

CONTENIDO: Las Coplas por la muerte de su padre, son una elegía escrita por Jorge Manrique en la muerte de su padre, el Maestre de Santiago don Rodrigo Manrique. Escritas, al menos una parte, con posterioridad al 11 de noviembre de 1476, fecha de la muerte de don Rodrigo Manrique, constituye una de las obras capitales de la literatura española y, sin duda, el mejor poema lírico de la poesía medieval castellana. Esta obra pertenece al género poético de la elegía funeral medieval o planto y es una reflexión sobre la vida, la fama, la fortuna y la muerte con resignación cristiana. Se...

An illustrated field trip visits a newspaper to explain about reporting and editing the news, printing the newspaper, circulation, and related topics, in a study that spotlights some important vocabulary and concepts.

Esta obra es el resultado, principalmente, de los apuntes de Televisión utilizados en los cursos desde hace años han venido siendo actualizados de manera prácticamente constante. El material de la obra abarca los aspectos básicos relativos a los sistemas tanto analógicos como digitales.