So many questions answered, and we are only two days into the competition...
That's really great!
Unfotunatly, we have some bad news. We just can't keep up with scoring all your wonderful answers. We had to find a simpler way to select the winner. The new rules are very simple. They are so simple we can say it in one sentence:
The first teacher that gets 30 best answers since Sun, 11 Dec 2011 wins the 100$
It's not a mistake. We've just doubled the prize!