It is a specially designed application which, for each of the 36 lessons in the series, contains:- the vocabulary with pronunciation and translation- the audio and video of each reading- additional vocabulary and grammar exercises (different from those in the book) in the form of gamesAlso included are:- hobby videos- the video clips of the songs- consolidated list of all the vocabulary of the seriesEach lesson is corrected with an automatic grading system and the teacher checks the students performance via email.