Electronic mathematics trainer

摘要: The specification discloses an electronic mathematics trainer including a problem sheet bearing plurality of arithmetic problems. An display holder receives the and includes lamps therein for sequentially being illuminated to indicate sequential ones problems be solved. A keyboard encoder enables student manually enter presently on sheet. unit displays which is entered into encoder. Circuitry provided compute correct answer encoder, along with at least one incorrect answer. answers are displayed unit. Structure enable selection answers. If selected, then adjacent problem. in responsive oder advance illumination next Selection also clears