Nuestro Planeta, la Tierra

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

Spanish English bilingual children's book. Perfect for kids studying English or Spanish as their second language. Ron and his best friend Maya go through a journey to become heroes. They learn important superhero rules which help them complete their first mission. They work together and help Maya's brother, learning new things about themselves.

Ever wonder how a balloon is made? Follow the journey of a balloon from its beginnings as gooey sap in a tree to its completion at a rubber factory. You'll be surprised to discover what a balloon started out as and how it becomes the bright, air-filled decoration that you enjoy today.

Albores del año 1875. Las familias de Luigi y Luigia dejan su caserío alpino y se unen a la marea emigratoria. ¡Les sobraban razones para arriesgarlo todo! En realidad era muy poco lo que dejaban atrás. Sus brazos y sus sueños eran sus mayores y únicos tesoros. Lo demás se daría por añadidura, o no... Junto a Giovanni Battista y Angela se unen a la reciente fundación de la colonia Villa Libertad, en el noreste entrerriano. ¡Todo está por hacerse! El lector está invitado a recorrer el desafiante y apasionante itinerario histórico y biográfico de estas dos familias vénetas en...