I am very impressed by this Tracker Free Video Analysis & Modeling Tool by Douglas Brown. It allows for learning in the context of real life video captured by the learners, analyze the video, even do a modeling of the equations to test their hypothesis of the equations that closely model the real life physics.

go to the website for the main program Download Tracker http://www.cabrillo.edu/%7Edbrown/tracker/webstart/tracker.jar
and the library of video clips Download mechanics videos http://www.cabrillo.edu/%7Edbrown/tracker/mechanics_videos.zip
and start exploring, i liked the ball up and down

if you are not clueless how to explore, get this package Web Start sample video experiments http://www.cabrillo.edu/%7Edbrown/tracker/webstart/tracker_sampler.jar

Tracker Free Video Analysis & Modeling Tool by Douglas Brown
Tracker is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License.

Video modeling is a powerful new way to combine videos with computer modeling--and only Tracker can do it! For more information on video modeling.

Thanks Douglas Brown dobrown@cabrillo.edu for his amazing tool.