El Pacto Del Mayflower /

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

A biography telling the life story of Booker T. Washington, along with his accomplishments toward promoting the education of African Americans. Written in graphic-novel format.

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

En medio de la naturaleza descansaba una piedra. Y la piedra era muchas cosas, dependiendo de quién la miraba y visitaba. Podía ser un refugio o esconder mortales peligros. Podía ser un lugar de reunión o un trono para sentarse. Podía ser infranqueable o insignificante. Pero lo importante es que ahí donde descansaba, pasaba la vida. En este álbum ilustrado que recuerda a autores como Lane Smith o Philip C. Stead, Brendan Wenzel permite que la naturaleza fluya alrededor de una única piedra y convierte su poema en una pasarela exquisita de animales, plantas, estaciones y cambios de...

The plot of The Empty Region takes the reader from the military camps of holy warriors in Pakistan, to the security corridors of the CIA and the FBI. It’s a fascinating puzzle inhabited by historical characters, including Osama bin Laden and George W. Bush, as well as officials aware of the tragedy´s secrets. Szichman leads us along the terminals where the air pirates of al-Qaida consummated their tragic ritual, makes us travel on the airplanes, turned into guided missiles, and recreates the 102 minutes when the burning towers of the World Trade Center became hell on earth. Although...