Abstract: An interactive teaching apparatus comprises an actual operative piece of equipment, or a breadboard, which is the actual object of the training or study, an interface coupled to the equipment for deriving data from relevant points in the equipment, an interactive computer including a program which provides the background to the teaching exercise, monitors the progress of the trainee being taught, monitors the data supplied from the interface to the computer, and guides the trainee through the stages of the program, a reproduction medium with pre-recorded instructional sequences containing teaching information concerning the equipment and sequences showing the possible consequences of action by the trainee, and a dual-channel digital storage oscilloscope for displaying waveforms derived from the points and comparing them with stored waveforms.