For example, in Algebra 2, I use it as a scanner, to take pictures of files that I want to post on the class website (answer keys, etc), or when I want to point out specific instructions on a paper. When we were solving polynomial functions, I did a matching jigsaw like puzzle, but I knew if I just verbally told them that most of the expressions were repeated as equations, they would be clueless, so I snapped a picture, hooked up phone to my computer and projected the following onto the Promethean to show the kids what I was referring to.
I've also used it as a scanner in AP Stat, but I also like it for snapping pictures of students doing class activities or to embed into a Jing video later on as a remediation tool. I took pictures as we explored what happens when we flip a penny 10 times, recording the proportion of heads versus flipping the penny 20 times. Now these pictures will be put into a screencast for review of sampling distributions of proportions. (Note: I'm also fond of Post-It pad paper and Dollar Tree smiley face stickers when I need to make graphs in Stat). I didn't take a picture of all of the writing I did afterwards - we talked about the difference between p and p-hat, and talked about the overall Normal model pattern that would emerge if we were to continue flipping the penny and recording p-hats
(Sorry for the sideways graph....)
In addition to using my iPhone for about every avenue of my life, I sent my AVID kids on a snow day scavenger hunt to find cool education apps that they could use to help them study and/or get organized. Since I haven't seen them since I gave them the assignment, I'll have to update you next week on what they found :)
I know there has to be more awesome ways to harness the power of my little mobile computer, how do you use it in the classroom?