This morning I found a New York Times article about using calculators on exams like the SAT, GRE, etc. It led me to Conrad Wolfram's TED Talk entitled "Teaching kids real math with computers", which I have embedded below. It is well worth taking the 17 minutes to watch it.
The title is misleading; it seems like you'll be hearing about doing our usual classroom stuff with technology instead of paper. Don't be fooled: Wolfram's talk is about boldly rethinking and reinventing mathematics education.