El libro secreto de las niñas

Describes the impact of the Ford Model T automobile and the assembly line that built it on the automotive industry and American society, and recounts the life and career of their inventor, Henry Ford.

How much life can one cubic foot hold? Read how photographer David Liittschwager and zoologist Chris Meyer studied life in one cubic foot, and how their findings can teach us about life on the entire planet. Created in collaboration with the Smithsonian Institution, this Spanish Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge that is perfect for use in a makerspace and teaches students every step of the engineering design process....

Pido disculpas a la lectoría, si es que acaso la tengo, por el atrevimiento del título, ya que debe ser ella, y no yo, quien califique la buena o mala calidad de mis poemas. He sido juez y parte en esta selección. Cada vez que escribo poesía, o mejor dicho, sirvo de vehículo para que ésta cabalgue cual brioso potro por los prados de los cuatro puntos cardinales, mi memoria, añeja ya de tantos años encima, se siente aliviada de su peso, pues se ha librado de un huésped que reclamaba su libertad. No creo que como poeta haya creado nada, sólo he liberado poemas en prosa y verso que...

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.