The kid I am teaching math (subtraction for large numbers right now) just said this is all too easily done by a calculator, why don't we use it?
Well, I did tell him that you can only learn more stuff by learning this, but this seems like an extremely wrong answer. I am lucky that he is interested in learning, otherwise for a kid who does not have a keen interest, this may have been a devastating answer, because the kid may think learning this only brings more learning.
So, what should be the correct way to teach someone that it's better not to use the calculator?
My question was just for small children, but I believe the concept can be carried forward to higher standards to the limit when computational mathematics is a necessity.