Maple
Maple is a powerful mathematical software package called a Computer Algebra System (CAS). It offers powerful graphic and computation engines. To download any of the worksheet (.mws) documents requires that you have Maple installed on your computer. You can learn more about Maple at http://www.maplesoft.com.
You may also check out the student support Maple website:
Maple worksheets
Math 224: Plotting 3 D Surfaces
Math 126: Introduction to Maple 10
Math 126: Plotting Space Curves Maple 10
Math 224: Partial Derivatives Maple 10
Math 224: Quadric surfaces Maple 10
Math 224: Solving Systems of Equations Maple 10
Math 224: Plotting Surfaces with Contours Maple 10