Thank you all!

We are members of the local museums, and love them. They are great for exploring interests at your own pace. I guess what I'm looking for are other early elementary kids who would be similarly enthusiastic about learning, and programming that would be engaging. I found a local science class that we are going to try this year. There are plenty of Russian math-type organizations (I think I can walk to 3!), but I'm not convinced that's the right fit right now.

Thank you mckinley for linking to the BPL. Our local library doesn't have too much by way of kids programming for elementary aged children, but I hadn't considered BPL! We went to a trivia event and had a fantastic time! As you suggested they were flexible about age limits. We'll definitely be back.

acgoldis - we've been to the Boston Athenaeum during one of their open houses! It's beautiful, and a really peaceful space.

Thank you again!