Quizzing app in development. What is here works but it is not complete or documented fully yet. It will eventually be described fully at http://eagle.phys.utk.edu/guidry/android, under Quizzing Application in the table of contents. Presently one can see some screen shots of the app in action at that link. The project also includes a Java program that should run on a Window, Mac, or Linux machine to present a graphical user interface permitting construction of JSON files of quiz questions for input to the app. It works, but is not yet included in this repository.