Cómo podemos utilizar el tornillo?

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

Defines levers, 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.

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

Labelled illustrations supply the English and Spanish words for the parts of the body. On board pages.

Jimmy is a sweet little bunny, who doesn't like to brush his teeth, but with a little magic and a few surprises, Jimmy learns just how important tooth brushing is and how much fun it can be. Jimmy el pequeño conejito no le gusta lavarse sus dientes, pero con un poquito de magia y unas cuantas sorpresas, Jimmy aprende cuánto es de importante lavarse los dientes y cuánto divertido puede ser.

Miss Esperanza Alice Gorst creció en París al cuidado de una amiga de su madre, Madame de L’Orme, puesto que sus progenitores fallecieron cuando ella no era más que una niña. Esperanza creció feliz al amparo de los cuidados de Madame y la formación que le proveía su tutor, Mr.Thornahaugh.Cuando ambos le comunican que debe asumir la responsabilidad de llevar a cabo una importante misión, a Esperanza no le queda más remedio que aceptar y viaja a Evenwood, Inglaterra, con el cometido de hacerse con la vacante de sirvienta de Lady Tansor, pero sin ningún conocimiento de su objetivo...