Cómo podemos utilizar la palanca?

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

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.

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

A lo largo de dos cartas dirigidas a un juez, un joven y aparentemente exitoso asesor bancario desgrana sus inquietudes y desvelos, la amargura que se oculta tras una fachada de triunfo social. Silva denuncia el sentimiento de estafa vital que asalta a muchas personas víctimas del modo de vida occidental. Una novela aparentemente sencilla, pero de indudable valor testimonial.

Esta primera novela de Fernando Claudín es un relato breve pero de una intensidad y hondura tales que sobrecogerá al lector y lo hará reflexionar sobre algunos de los grandes problemas pendientes de nuestro tiempo.

No town or city could be built if the builders didn't understand the concepts of perimeter and area. Students will use perimeter and area to build towns and cities and design homes and parks in the book, Pueblos y ciudades (Towns and Cities). At home or in the classroom, this nonfiction book will engage students in learning measurement and geometry, and how to grid patterns, through fun practice problems and diagrams.

These poems speak about the nature of the Chilean countryside, of its animals, its aromas, and its stars. These are verses that invite us to direct our gaze from the Earth to the sky, from the smallest things to the most magnificent. The rhymes and poems compiled in this anthology introduce children to the works of Gabriela Mistral, and allow them to enjoy this poetry that is "infused with heart" by the only female Latin American author to win the Nobel Prize for Literature. Poemas que hablan de la naturaleza propia del paisaje chileno, de sus animales, de sus aromas y de sus astros. Versos...