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