Disfraces de objetos

Juro lealtad a la bandera (I Pledge Allegiance to the Flag) teaches students about the Pledge of Allegiance. This book uses intriguing primary source images and documents and simple sentences to engage students in reading as they build their social studies content knowledge. For use in the classroom or at home, this Spanish book includes a simple glossary, captions and an index to introduce informational text features to young readers and provide additional reading support.

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

A stinky look at the history of personal hygiene reveals fascinating facts, such as the invention of the toilet, how many times Queen Elizabeth I had a bath, how the first sewers were built, and much more.

Los años noventa del siglo pasado fueron testigo de un florecimiento notable de las reflexiones estéticas consagradas a la estética. Lo más sorprendente es que estos debates encontraron, al menos durante cierto tiempo, un eco público más allá de la esfera de la filosofía profesional, sobre todo en lo que se ha dado en llamar «el mundo del arte». De ahí a creer en un renacimiento de la propia doctrina estética no hay más que un paso, que algunos filósofos se han apresurado a dar. El objeto de este ensayo es mostrar el carácter ilusorio de una creencia así incluso de una...