These maple release 3 worksheets were part of a Vector Calculus 
course I taught using "Vector Calculus", by Marsden and Tromba,
Freeman and Company.  They are listed in reverse chronological order.
Many of them are fragmentary in nature, but some are polished.  
Carl Eberhart
Math. Dept., Univ. of Ky.
carl@ms.uky.edu
http://www.ms.uky.edu/~carl