El mundo como un juego matemático

Summarizes how water changes from a solid to a liquid and back again, and introduces related facts such as that water freezes at thirty-two degrees Fahrenheit and that ice floats.

La obra se compone de un selecto conjunto de documentos históricos y comentarios de historiadores, organizado y sistematizado por el autor. Naturalmente, toda la documentación se refiere al período dominado por la figura de Oliver Cromwell y la institució

Practice finding patterns while learning about music around the world! Many different musical instruments use patterns to make different sounds into rhythms, such as tambourines, drums, and flutes. This charming, Spanish-translated text uses vibrant images, engaging practice questions, and helpful mathematical diagrams to help young readers understand patterns and early STEM themes. Children will have fun discovering patterns that these instruments make and learning how to make patterns of their own with homemade instruments! This 6-Pack includes six copies of this title and a lesson plan.

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...