Avatar (2009 film) themselves to change into a Na'vi. "Avatar: A Confidential Report on the Biological and Social History of Pandora", a 224-page book in the form of a field guide to the film's fictional setting of the planet of Pandora, was released by Harper Entertainment on , 2009. It is presented as a compilation of data collected by the humans about Pandora and the life on it, written by Maria Wilhelm and Dirk Mathison. HarperFestival also released Wilhelm's 48-page "James Cameron's Avatar: The Reusable Scrapbook" for children. "The Art of Avatar" was released on , 2009, by Abrams Books. The book features
Avatar (2009 film) weekend revealed the average grade cinemagoers gave "Avatar" was "A" on an A+ to F scale. Every demographic surveyed was reported to give this rating. These polls also indicated that the main draw of the film was its use of 3D. Roger Ebert of the "Chicago Sun-Times" called the film "extraordinary" and gave it four stars out of four. "Watching "Avatar", I felt sort of the same as when I saw "Star Wars" in 1977," he said, adding that like "Star Wars" and "", the film "employs a new generation of special effects" and it "is not simply a sensational