Physics - e-learning versus s-teaching

Why is it that undergraduate students have such a hard time "grokking" physics ? There's a lot of information, but more interesting is the apparently larger number of courses that ignor it (evidenced by course notes and catalog descriptions. (undergraduate failure to learn newton's laws)

• Active Engagement and Cooperative Learning, "Active Engagement, Cooperative Learning in Large Enrollment Introductory College Physics Lectures for Preservice Teachers, Dan MacIsaac, NSF CETP Conference, 24 March 2000.
  
• Fancart, Shelley Paewai, Malcolm Bowling, and Rod Lambert, The Third Australian Conference on Computers in University Physics Education, 19 November 1996.
  
• Overcoming Alternate Conceptions, "An Overview of Techniques for Identifying, Acknowledging and Overcoming Alternate Conceptions in Physics Education," Joel Klammer Teachers College, May 15, 1998.
  
• Resource Letter on Physics Education Research, Lillian C. McDermott and Edward F. Redish (nodate)
  
• "Computer mediated learning: Designing an interactive multimedia tutoring system for foundation science ideas", Mark Cosgrove and Shirley Alexander, University of Technology, Sydney (1995)
  
• The Development of the Studio Classroom, Jack M. Wilson, Rensselaer Polytechnic Institute. (undated)