Exclusively from Black River Music Plus - Melodic Motion Studies - Jeff Salisbury
Jeff Salisbury, University of Vermont drum-set instructor and active performer, presents here a compilation of interesting and fun exercises which assists the student in acquiring skill in clockwise and counterclockwise motion around the drumset. Ultimately, these lessons will show the possibilities of interesting and unique new sounds from the drum-set. An accompanying CD is included with the book.
Exercise 1 is shown here as an example:

And it gets more interesing and challenging in subsquent exercises!