document camera viewer. The person's performance is reported through the network, and then the relevant office of the school conducts a situation review, and submits the situation to the school's in charge of the principal. After the principal confirms the teacher's performance, the teacher adds points to the performance appraisal. Finally, the principal's room accumulates the score. . For those parts that cannot use the points, Haining Elementary School rewards them in the form of allowances. The digital teacher performance appraisal has improved the enthusiasm of teachers and promoted the effective development of school education and teaching.. Interactive Document Camera is a completely new concept design and mobile visualizer. The touch capability on IQTouch and IQBoard, IQView E3511 Document Camera can be freely used for presentations anywhere in or out of the classroom or office.