Re: Elephant in the room
I use IWs every day, 4 to 6hours a day, 9 hours on Thursday (love the evening classes).
You develop strategies (I annotate PPTs based on whole group q&a and use some of the interactive reveal thingies the software provides, then we print the results to pdf and pop them into Moodle - too much of my handwriting looks pants anyway). Some kinds of board have a storage facility so you can 'play it again' - students find this endlessly cool for some reason (and this is the iPad generation teenagers!). Good for recap the next week. Plenty of maths widgets and backgrounds available in the IW software freebies. Plenty of interactive stuff on t'interwebs.
I'm looking forward to cheap tablets with stylus that have projector sockets. Could do the whole thing for the cost of the projector then. Fat finger tablet screens not quite fine enough for writing.
Shadows: You need to avoid looking into the projector for safety anyway, and I like the anamorphic lensed projectors that fold out the top, no problem with shadows, and left-handed teachers don't need to change writing style.
Anyone use the Mimio stuff here? I imagine clipping a thingy onto the flipchart might be more effective for commercial training than the full IW.
PS anyone who drops 80K on one of these screens for training use wants their head testing. I'm assuming this thing is a 'concept car' for marketing types.