A display apparatus includes a display, a display controller, a sensor, and a work identifying unit. The display controller causes the display to continuously display a guidance video. The guidance video indicates a specified work procedure of respective processes. The display controller analyzes a work procedure that has been actually performed by the operator from a time series of the respective works identified by the work identifying unit, compares the analyzed work procedure with the process sequence and the specified work procedure, and returns to the process including an unprocessed work that has not been performed in accordance with the process sequence and the specified work procedure to cause the display to redisplay the guidance video indicating the work procedure of the returned process when having determined that the work performed by the operator is not performed in accordance with the process sequence and the specified work procedure.