Finding Lead Users - High School Math

[kablooey]

How should I go about finding lead users among high school math teachers?

I have some good ideas for high school math instruction, but I'd like their ideas and feedback, too. So I need to find them, then interview them, and, ideally, sit in during some of their classes.

So far, I have:

• Joined my area's math teacher association;
• Skimmed through magazines directed towards teachers;
• Started asking around the high schools I have connections with about highly innovative math teachers;
• started checking out high school math teacher blogs;

Any other recommendations?