I posted a page about the Center for Innovative Teaching summer workshops. I will be teaching "Visual Algebra" in both DC (at the Flint Hill School) and San Francisco (at Urban, my home base.)
In San Francisco, I'll also offer "Hands-on Geometry". Unlike two years ago, I'll include an interactive computer geometry component (on construction, and soccer angles), and be more concrete about the "authentic approach to proof."
Most exciting is that I'll get to attend a one-day workshop on Cabri 3D with Kate Mackrell, who's been my online mentor in interactive geometry, be it two- or three-D. Check out her Web site.