Keith Neufeld - Electronics Blog
"By the way, here's how to count more than a couple dozen small objects. Get a container to use as a discard pile, then count "3-6-9″ into the discard, "10″ into a new holding pile. "3-6-9″ discard, "10″ holding, etc., until you have few enough left that they don't make 10. Move that remainder to the ones place of your answer row.
Now count your holding pile, each object of which represents 10 original objects. "3-6-9″ into the discard, "10″ into a new holding pile. When you have less than 10 left, that's the tens place of your answer row. Repeat for 100s, 1000s, etc. as needed. When you're done, read off the answer by counting the objects in the different places in the answer row. "
- Keith Neufeld
