Reference Topics 2-2

This is a web-based instructional module on the algebra of sets.
http://lrs.ed.uiuc.edu/students/avilesga/project/main.html

Union of Sets:
http://lrs.ed.uiuc.edu/students/avilesga/project/union.html

Intersection of Sets:
http://lrs.ed.uiuc.edu/students/avilesga/project/intersection.html

Venn Diagrams for union and intersection:
http://lrs.ed.uiuc.edu/students/avilesga/project/venn.html