CT2.0 » Modus Ponens http://inquiry.mcdaniel.edu Archive of examples of reasoning for use in Critical Thinking classrooms Tue, 17 Jan 2012 21:19:53 +0000 en hourly 1 http://wordpress.org/?v=3.1.1 Truth Table for Modus Ponens http://inquiry.mcdaniel.edu/blog/2011/08/12/truth-table-for-modus-ponens/ http://inquiry.mcdaniel.edu/blog/2011/08/12/truth-table-for-modus-ponens/#comments Fri, 12 Aug 2011 16:49:28 +0000 admin http://inquiry.mcdaniel.edu/?p=4095

A simple interactive truth table for proving the validity of Modus Ponens:

Click ‘start’ to begin. Then click on the ‘P’ and ‘Q’ on the left to drag the truth-values to the atomic components of the sentences. You’ll see a T/F appear under each connective. Set the correct values and click on ‘Check’ to verify. When the table is completed, it will prompt you to highlight any rows with a false conclusion, and then circle the truth-values of the premises to verify if they are both true. If there are no rows with true premises and a false conclusion, it’s valid (by definition).

]]> http://inquiry.mcdaniel.edu/blog/2011/08/12/truth-table-for-modus-ponens/feed/ 0 Modus Ponens Form http://inquiry.mcdaniel.edu/blog/2011/04/21/modus-ponens-form/ http://inquiry.mcdaniel.edu/blog/2011/04/21/modus-ponens-form/#comments Thu, 21 Apr 2011 13:38:51 +0000 admin http://inquiry.mcdaniel.edu/?p=3457

A simple flash app to demonstrate the form of modus ponens. Add any proposition to the boxes marked ‘A’ and ‘B’ and press ‘Start’. The argument will be filled in.

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