Abstract: A method and device for facilitating learning of musical scales on string instruments are provided. The device comprises a visual scheme consisting of blocks to be positioned just below notes of a scale when fixed on an instrument, each block being formed by the overlap of two rectangles in distinct sizes, which serve as space for accommodation of different didactic information; a manual providing information for the understanding and proper use of the visual scheme; and a musical background providing tracks that sound in the same frequency or tonality of the visual scheme. The device can further include a complementary visual scheme useful in practicing scales in different tonalities.