from graphjam.com, as usual 🙂
At least, this is true for students that don’t go to RM. I’m sure most students at RM use their calculators for exclusively academic purposes. Right? Right?
What graphing calculators are really used for
Random Walks
Mr. Chase blogs about math
Random Walks 
You know your students so well. The exclusively academic purposes part, I mean. 😀
Love the pie chart. Nicely sums up everything. And yes I am also facing something quite similar here in Singapore, though the situation hasn’t gotten out of hand for the moment.