I've tried, but finding a blackboard the right size and height for me to learn that has so far proved a challenge.
The size of the circle is dictated by the length of your arm and the bottom of the circle is dictated by the height of your shoulder.
I'm a shortarse so most lecture theatre blackboards I've tried are too high for this to work, and most non-lecture theatre blackboards are too small.
You mean you *haven't* tried?!
by Little Paul, in response to this post 2015-08-30 07:19:36