Robphy: I really appreciated your post. I would like to do something similar to what you are doing, and (even more) would like to be able to recommend it to the places I teach. Can you let me know what else to watch out for, some idea of the cost of any associated hardware (we already have the...
A TECHNIQUE FOR MENTAL MULTIPLICATION
(ALSO USEFUL FOR COMPUTER ARITHMETIC)
When I was in Grade School, I was taught the standard way of multiplying numbers with more than one digit. I will describe the method only briefly, since it’s probable that everyone reading this will have seen and...