(1) The initial preparation of the student by the training of his spontaneous capacities for assimilating spoken language.

(2) The forming of new and appropriate habits and the utilization of previously formed habits.

(3) Accuracy in work in order to prevent the acquiring of bad habits.

(4) Gradation of the work in such a way as to ensure an ever-increasing rate of progress.

(5) Due proportion in the treatment of the various aspects and branches of the subject.

(6) The presentation of language-material in a concrete rather than in an abstract way.

(7) The securing and maintaining of the student’s interest in order to accelerate his progress.

(8) A logical order of progression in accordance with principles of speech-psychology.

(9) The approaching of the subject simultaneously from different sides by means of different and appropriate devices.