SOCS-I Arons chapter 4

Tonights reading made me feel pretty good about what I do.  I have a cut circular path; I use an overhead projector to project shadows of motion and "arrows," and I talk to the kids about the difference between motion with direction(rotations through angles) and vector displacement.  I am curious how I would make this a discovery/paradigm lab instead of a "sage on the stage" event.  I am excited to have the kids walk around in front of the overhead projector.  I am a huge proponent of using "modern" technology when it has pedagogical implications in the classroom.  I wonder if it will be any better if I make the shadows on a SMART board.