Section 3.2 Reference Topics
Using a computer to construct a truth table.
http://www.brian-borowski.com/Truth/
Mathematical Logic around the world
http://www.uni-bonn.de/logic/world.html
Critical Thinking: Conjunctions and disjunctions are used
on this site which investigates the process of critical thinking.
http://www.sjsu.edu/depts/itl/graphics/options/options.html