Instructional apparatus

Claim 1

An instructional apparatus for teaching or testing students with a series of program cards having problems and a plurality of multiple choice answers thereon, said apparatus comprising a teaching machine having a support, a rotatable drum having a peripheral surface and end surfaces mounted on said support for turning about its longitudinal axis, means on said drum for releasably fastening a series of said program cards to the peripheral surface of said drum, a housing on said support for covering said drum and positionable to expose said drum for fasteNing said program cards thereon and having a display window for exposing the program card at a display position at which the student may view a problem and select one of the multiple choice answers therefor, motor means for sequentially indexing the drum to bring the program cards to said display position, a plurality of manually operable answer switch selectors corresponding in number to and each associated with the multiple choice answers on a card, said same plurality of manually operable answer switch selectors being useable with each of said program cards and for selecting a correct answer for a problem thereon, a set of manually settable selector switch means disposed at an end surface of said drum and associated with each program card and including selector pins settable to a position corresponding to a right answer or a wrong answer, coding means identifying each selector switch pin of each set of switch means with a multiple choice answer on an associated program card whereby the apparatus may be programmed by the user with a setting of the selector pins in accordance with right and wrong answers for each program card, an electrical control circuit in said teaching machine having means for operating in a first mode to condition said teaching machine to index said drum in response to a right answer choice but not in response to a wrong answer choice, a remote test control unit for grading the student''s answer selection, electrical connecting means extending from said remote test control unit for detachably connecting the same to said teaching machine, said remote test control unit having a counter therein for grading and displaying the grade of the student''s answer selection, said electrical circuit having means for operating in a second mode to cause said counter to operate in said test control unit and to cause said drum to index with each right or wrong answer choice, and switch means for causing said electrical control circuit to operate in said first mode or in said second mode.