I'm looking for recommendations on (1) a breakdancing, hip hop, or similar style dance class and (2) a chess club or class -- in both cases for winter session activities and more broadly for any/all seasons, for my second grade boy, age 7-8 level.

Prefer Virginia (esp Arlington but also McLean, Alexandria, Falls Church, etc.) for extracurricular activities but would do NWDC too. I've preliminarily looked at Arlington County Parks and Rec programming but didn't find great options for these activities.

I'd appreciate any recommendations!