The flipping coin catcher

Miss West wanted us to do a fun experiment for writing, it was called the Catching Coins Challenge.

Miss West didn't have enough coins for us all, so we used counters instead.  At the beginning of the game you get one counter.  You have to put it on your elbow and then flick your arm and try and catch it.  If you can catch one, you get another counter to add to your elbow.  The winner is the person who can catch the most counters.  Most of my class could catch 12 counters. No one got more than that.  It was easy when we started off, but when I got to eleven counters it got hard.