Cómo podemos utilizar la palanca?

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

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

A young girl explains how she and her diverse group of friends are all different from each other. In this first-person nonfiction narrative, vibrant photographs reinforce the idea of a community of students who respect each other and live in harmony. A picture-word glossary is included.

El amor duele, o eso pensaba en aquel entonces, cambié de parecer conforme pasó el tiempo, sin embargo, toda esa transición y cura, las fui dejando aquí, para el amor de quien creí alguna vez la mujer de mi vida. La hice poesía, para recordarla y amarla eternamente, aunque yo muriese entre mis letras ella me encontraría cuando me necesitase. La amé con el alma, se llevó una parte de mí, y es por eso, que lo que quedó lo dejo aquí.

The Underground Railroad was the massive effort by slaves and free people to secretly bring thousands of blacks to freedom in the North during the 19th century. This thought-provoking book will capture readers’ imaginations and fill them with awe for the brave “conductors” and “passengers” on the Railroad. They’ll learn about the many safe havens, called “depots,” that housed fugitives and the secret passages within them that hid slaves from their pursuers. Information about the American Civil War and the Fugitive Slave Act, biographies of figures vital to the Underground Railroad,...

El adorable arte de Precious Moments cuenta la historia de la Pascua. Este libro de cartón acolchado de la marca Precious Moments hace que sea fácil compartir la historia de Jesús con los niños pequeños mientras les enseña el amor de Dios por ellos.