using video in learning

how effective are video lectures ?

• chem 1a -
  digital chem 1a initiative, university of california, includes
  
  
  
  • Deployment of online quizzes and pre-laboratory exercises,
    with automatic grading and immediate feedback
    
  • Conversion of lecture chalkboard content to digital
    slides with graphics and animation, used in lecture and
    available online
    
  • Internet broadcast (webcast) of video lectures, with
    synchronized and indexed slides, both live streaming
    video and archived video for on-demand replay
    
  • Online lab manual, with animated, interactive exercises
    to assist students in preparation for laboratory
    
  
  The project is supported by a $350,000 grant from the Andrew
  Mellon Foundation. Digital media support comes from the
  Berkeley Multimedia
  Research Center using
  OpenMash mBone. A demo
  lecture browser is configured to assist in course navigation.
  
  
• debate central - at the University
  of Vermont, supports high school and collegiate debating throughout the
  country. Includes a debate watch
  archive and live channel.
  
  
• introducing xServe - steve jobs gives highly rated presentations
  at macintosh events; apple broadcasts these live and makes the archives available.
  The presentations are highly produced - several cameras, a video director, and tight
  scripting that allows for improvization. These presentation usually run for 2 or 3 hours;
  the archive versions, though lacking "chapters", can be "fast forwarded" or "rewound."
  
  
• webcast center - at
  uc berkeley provides 18 video channels.