P.S.: On my last post I said that when Hannah figured out that the exact middle of the piano keyboard was RIGHT IN THE CRACK, she would inform her teacher. Well, she figured it out today and let me in on it, so I'm sure she'll inform her teacher at her next lesson. In fact, she counted all 88 keys, several times to be sure, and then told me that it was "impossible for a piano key to be in the exact middle, because there were 88 keys, and that meant that a crack was the exact middle".
What can I say? I guess I know my OCD daughter very well.