When I looked in his direction I could see the look in his eye.
"Can you show me how to do this?"
I answered his question in a round about way. "How do you feel about the Large Bead Frame" I asked. "Oh I have been working on writing the notations of the problems like if you have the number 530 you write 0 for units, then 30 for the ten place and 500 for hundreds" he replied. " Lets's give it a go!" I said.
Of course he had to record the problem on paper too, his idea not mine..