Cómo podemos utilizar el tornillo?

Defines pulleys, 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.

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

Learn about the rich history of Mission San Buenaventura: how it started, the people who ran it, the indigenous population, and its legacy today.

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Sally, una dulce y simpática muela adolescente, recibe la visita de la terrorífica Caries. Por lo que deberá adentrarse en un viaje lleno de aventuras junto a sus adorables amigos para buscar la ayuda del Chamán del Norte.

El famoso escritor Cósimo Herrera, eterno candidato a un Nobel que no llega nunca, decide retirarse a Ribanova, una pequeña ciudad de provincias apartada y brumosa. Allí conocerá a Luisa, una muchacha veinte años más joven, y que desde el primer momento sentirá por el forastero un amor tan apasionado como imposible.