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.

El poeta Marcial, nacido en Bilbilis (cerca de Calatayud), dio al epigrama carta de ciudadania en la literatura latina como genero literario, incorporando en su escritura la tradicion literaria latina anterior, epigramatica y no epigramatica, configurandolo con la forma que entre nosotros ha quedado como definitiva: la de una composicion breve, incisiva, a menudo satirica y rematada con un rasgo inesperado.

Carlitos recibe la visita de lo que parece un fantasma: se trata de una señora que todas las noches se le aparece. No parece peligrosa, pero tampoco deja claras sus intenciones al manifestarse frente a Carlitos. ¿De dóndie viene, entonces? Su origen es un libro. ¿Y qué busca? A su hijo, que se perdió en el bosque, más allá del árbol guardián.

There are many types of street signs with symbols that are important to know and follow. Let's explore some of the different street signs found in a city! The Me Pregunto (I Wonder) series is perfect for young learners in prekindergarten through grade 2. These 16-page books give readers an accessible introduction to nonfiction reading. Color photographs and fun, factual examples will grab the attention of young readers and help strengthen reading comprehension skills.

This Title Teaches Students That Everything Is Made Of Matter, And That Physical Changes Create Different Forms Or States Of Matter. Gives Examples Of These Different States In Easy To Understand Text And Introduces Students To The Law Of Conservation Of Mass.