I have been using this program in a similar way to use the iPad school is letting me play with to control my screen. Today I had several breakthroughs that are moving me closer and closer to thinking that this is the way to go. In the past my classroom has used the awesome combination of Skitch and a Wacom Graphire Wireless, and I still love and recommend that combination to anyone looking at a traditional interactive white board. Much cheaper, much more student, subject and learning focused and significantly cheaper. Above all this, it just works which is important for teachers. Teachers do not use stuff that does not work every time.
That being said I am trying AirSketch on the iPad. Why? because it is cheap as well. The combo that I use is about $300, but if you buy the pads from Promethian or Mimio they will set you back north of $400. Lately I have see iPad popping up on the refurbished list for $450. So if you can make it work as well as these other options, for only $50 more you also have a iPad instead of a hunk of plastic. And, since the connection is through your wireless network there is little chance of interference like there is with my Wacom.
Two things happened today to make it click that AirSketch might just be the right thing. First, I accidently two finger zoomed, and sure enough I could fill in details in a section of my drawing. Details are much easier to draw with a pen than a finger. The AirSketch app makes detail possible by allowing you to zoom in and work in a small area. Before I knew this I was not able to fit an entire problem on a page.
Second, I figured out how to take a screen shot using my iPad, this is then 3 clicks away from being a background to draw on in AirSketch. For me this is essential, since most of my homework is online. I used to surf to a problem that a students asks about and screen shot it with Skitch and go. Now I surf on the iPad to the problem, screen shot it by pressing the Power button and the iPad button at the same time, then switch to AirSketch and pull it out of the photo gallery and draw on it to help the students.
What is super cool is now I can also give it to the students, since they can see where they are writing. If only the iPad had four finger swipe application switching we would be all set.