La civilización griega

You re growing up and your body is changing. If you re a girl, you re likely experiencing the start of menstruation, your breasts are making themselves known, and you re noticing new hair that you might want to be rid of. If you re a boy, you may be experiencing something strange as you sleep, or sweating a lot and not wanting to shower. This book is a complete guide to the terrible and marvelous world of puberty."

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.

HernanCortes parte rumbo al Yucatan con la mision de auxiliar a la expedicion de Juan Grijalva que enviara el gobernadorde Cuba, Diego Velazquez, y de la cual no se habia vuelto a tener noticia. Noobstante, poco antes de la partida, el gobernador decide desposeerle del mando, pero Cortes consigue hacerse a lamar, y luego de vicisitudes sin cuento, se adentra en ignotos territorios dominados por los indios mexicas, cuyo emperador, Moctezuma, rige susvastos dominios desde la ciudad de Tenochtitlan.En un principio, Moctezuma cree saber queHernan Cortes es la encarnacion del diosQuetzalcoatl, "La ...

Students Will Love Learning More About Our Earth, Moon, And Stars In This Title. It Gives Information On The Phases Of The Moon, The Constellations Of Stars That We See In The Night Sky, Comets And Meteors, And What Exactly Happens During A Lunar Eclipse.