total value of all keys pressed 71 the student then affirms the response by pressing the check key 37 it will be observed that the unit would have taken one of the various previously discussed alternatives indicated on the flow chart if the student had exercised his option to press any of the other keys how following the pressing of the check key 37 the unit determines the correctness of the response and communicates that to the student this is indicated on the flow chart at 73 on fig3 b and then at 74 on fig3 d continuing with fig3 d if the response was at 74 the unit will speak a praise phrase such as 34 great that 39 s correct 34 75 and after updating the win score 76 follow with another value item to be matched within that activity and at that level if the response is not correct 77 the unit communicates that fact with a statement like 34 that 39 s not it try again 34 78 or the like which is followed by a repeat of the last lead in phrase 79 if after the second try the student 39 s response is still incorrect 80 the unit generates another random 34 incorrect 34 phrase 81 the correct in memory 83 increments the loss score counter 84 and starts that activity over again 85 which is 61 on fig3 b it will be observed that play may continue indefinitely in a selected activity as long as a key is pressed at least once every one and a half minutes 67 fig3 c after a selected number of rounds every tenth round in the preferred embodiment the score will be spoken and displayed 66 fig3 b when it is desired.