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        The Logic Tutor: A Multimedia Presentation 
        David 
        Abraham, University of Sydney 
        Liz Crawford, University 
        of Sydney 
        Leanna Lesta, University 
        of Sydney 
        Agathe Merceron, University 
        of Sydney 
        Kalina Yacef, University 
        of Sydney  
      David Abraham 
        Basser Department 
        of Computer Science, University of Sydney 
        dabraham@cs.usyd.edu.au  
      Liz Crawford 
        Basser Department 
        of Computer Science, University of Sydney 
        ecrawfor@cs.usyd.edu.au 
      Leanna Lesta 
        Basser Department 
        of Computer Science, University of Sydney 
        leanna@cs.usyd.edu.au 
      Agathe Merceron 
        Basser Department 
        of Computer Science, University of Sydney 
        agathe@cs.usyd.edu.au 
      Kalina Yacef 
        Basser Department of Computer Science, University of Sydney 
        kalina@cs.usyd.edu.au 
         
       
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