13. An educational device as claimed in claim 4 comprising audio-visual-tactile means for showing the correspondence between said indicia of said rings on said fingers of said hands and specific keys of the keyboard to be struck by said fingers of said hands.
13. An educational device as claimed in claim 4 comprising audio-visual-tactile means for showing the correspondence between said indicia of said rings on said fingers of said hands and specific keys of the keyboard to be struck by said fingers of said hands. 14. An educational device as claimed in claim 13 for assisting in the learning of a keyboard, wherein said audio-visual-tactile means comprise: a first representation of the left-hand indicating the indicia of the rings on the fingers of the left hand, and a second representation of the left-hand indicating the corresponding letters and symbols of said specific keys to be struck by said fingers of the left-hand; a first representation of the right-hand indicating the indicia of the rings on the fingers of the right hand, and a second representation of the right-hand indicating the corresponding letters and symbols of said specific keys to be struck by said fingers of the right-hand.