This site reviews propositional logic:

http://www.earlham.edu/~peters/courses/log/terms2.htm

Here is an propositional logic applet for building truth tables:

http://www.oursland.net/aima/propositionApplet.html

This site reviews propositional logic:

http://www.earlham.edu/~peters/courses/log/terms2.htm

Here is an propositional logic applet for building truth tables:

http://www.oursland.net/aima/propositionApplet.html