Vi was featured on the NPR science blog Krulwich Wonders... in a post called I Hate Math! (Not After This, You Won't).
|Vi Hart's six squares balloon tangle|
For example, she makes instruments out of paper, and makes videos of them being played while alight. (The instruments, not the musicians.)
And she's a genius at explaining things in a fun and approachable way.
Here's a fun video from her blog: