Collection of textbooks in digital format for high schools in Brazil, available for Android tablets. It covers all the content of this level in the subjects Philosophy, Geography, History, Sociology, Biology, Chemistry, Physics, Mathematics, Performing Arts, Visual Arts, Music, Spanish Language, Portuguese Language (grammar, literature, text) and Writing. The content contains theoretical exposition, examples, solved exercises, proposed exercises, Brazilian entrance exams and Enem exercises, with answers. Includes videos, animations and interactivity.