Descubra c?mo esta sencilla m?quina facilita la elevaci?n y la bajada de objetos. Aprenden sobre poleas fijas y m?viles y cu?ndo es mejor usar cada una.
Descubra c?mo esta sencilla m?quina facilita la elevaci?n, la reducci?n y la apertura de las cosas. Aprenden los tres tipos de palancas: de primera clase, de segunda clase y de tercera clase.
Provides information about the jobs people had during colonial times in America, how they learned the skills they needed, how jobs were chosen, and how modern work compares with that of the colonists.
"From the hours people work to the different kinds of jobs they have, work often looks different for individuals all over the world. Readers of this . . . volume take a look at different jobs and workplaces all around the planet and see how things can be different or similar to the kinds of work they're familiar with adults having. Age-appropriate text introduces readers to different cultures and ways of life, while colorful photographs help them visualize some of the places and concepts discussed"--Provided by publisher.
"Emma takes on a few more jobs and chores to afford a junior bridesmaid dress, but she might have bitten off more than she can chew"--Provided by publisher.
"With the schools closed and his babysitter sick, Bunny accompanies his mother to work--but he finds waiting in her office with nothing to do or eat a bore so he goes exploring (what could possibly go wrong?)"--Provided by publisher.
