>Let me say that that statement depends upon what you do in life. As a >construction worker, I was forced to perform innumerable calculations in my >head or with a pencil on a daily basis because a calculator would quickly >have been broken in my tool pouch. Furthermore, I did not have the time to >pull out a calculator every time I needed to add a couple of numbers. When I >became foreman & supervisor, I found that customers inevitably asked me for a >rough estimate for a job when we were on the roof or some other equally >inconvenient place. Again, I had to be able to put numbers together in my >head. When talking to salesmen, I found that they too had to carry numbers >and perform rough estimeates in theri heads. Off hand, I would think that >construction workers, engineers, & salesmen must be able to do pencil & paper >math or mental calculations. These occupations account for a large portion of >our population. >marge >
You say that in many situations, you were called upon to do mental calculation. That is very good. My message implied that paper/pencil algorithms are, in general, used less than mental or electronic calculation and, yet, pencil/paper is emphasized most in the classroom.
I feel that each of the three methods is of value but, at present, there is an inequity in how much time is devoted to each.