wireless document camera for classroom. Whiteboards are cost effective, inexpensive and have low running costs.As of September 2010, plain white boards measuring 36 inches in length and 48 inches in width cost between $45 and $50, according to Office Depot. Erasers cost between $3 and $8 and dry-erase markers cost between $2 and $10 each. Whiteboards cost less than constantly using and discarding flip-charts and making multiple worksheets.. 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.