On Thu, 16 Feb 2012 05:09:22 -0800 (PST), "
wrote:

On Feb 15, 9:27*pm, Ed Huntress wrote:


I said nothing about that. I said that what YOU said is incorrect --
they don't teach that in "most grade schools."

--
Ed Huntress

Maybe not, I certainly am not going to try to prove it either way and
doubt if you really know what is taught it most grade schools.

I don't care what you doubt, Dan. You're such a contrarion that you'd
question whether the sun rose in the east this morning.

Search Google with these terms in quotes, on one line: ["round half
up" "grade school"]. You'll see how it's done.

Or search ERIC. It's loaded with references to rounding as it's taught
in 3rd grade math. It's round-half-up. That appears to be true, also,
in Canada and in the UK, based on the ERIC references.

Other methods may be taught in advanced classes, but that's not what
you claimed. You said "most."

But
one of the Wiki authors said it was what was taught in most grade
schools.

I didn't see it in the Wikipedia article for "rounding." Where did you
see it?

And it my opinion it is what ought to be taught in grade
school.

shrug Rounding is taught in most elementary school as a way to
understand place value, as an aid to quick problem-solving, and to
help with some other concepts. If you're going to get into other
methods of rounding, you also need to get into an explanation of
rounding biases, or you're not teaching anything.

I was taught that in high school, and in 5th grade, where I was in a
very advanced class, my teacher introduced the subject of rounding
baises and alternate methods of rounding. That was not in NJ. That was
in PA.

As for what should be taught in math, that's a very interesting
subject. If you want to get into it, search ERIC. Searching inside
your head will just lead you in endless loops.

--
Ed Huntress


Dan