The method includes {TAIL ~ the steps} of providing the apparatus of the invention, energizing the suction device, and moving the eraser across a chalkboard to collect {HEAD ~ chalk dust} 
The method includes { TAIL ~ the steps } of providing the apparatus of the invention , energizing the suction device , and moving the eraser across a chalkboard to collect { HEAD ~ chalk dust }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD