Date: Thu, 02 May 2002 09:29:32 -0400

Author: Dick Heckathorn

Subject: RE: units of measurement

Post:

Greetings,

I think that you will find that it was even earlier than that. I think I
remember an article in Readers Digest from 1964 about being all metric
in 1964. I still do my part for in my classroom, as just the mention of
an English unit of measurement .....

Dick

"Science is nothing more than learning how to communicate with nature in
such a manner that it will talk back."

Helping teachers who facilitate, motivating students who learn.
Dick Heckathorn 14665 Pawnee Trail Middleburg Hts, OH 44130
440-826-0834
Physics Teacher CVCA 4687 Wyoga Rd Cuyahoga Falls, OH 44224
330-929-0575 VM 120


-----Original Message-----
From: owner-tap-l@listproc.appstate.edu
[mailto:owner-tap-l@listproc.appstate.edu] On Behalf Of Duane Warn
Sent: Monday, April 29, 2002 1:25 PM
To: tap-l@listproc.appstate.edu
Subject: Re: units of measurement

Good Morning Jim,

In the 70's, the federal government decreed that in the next 10 years
the US will be converted completely to the metric system, so all science
and math teachers should teach it. So I did my part with some
interesting feedback. The students didn't want to learn that "communist
system", they just wanted their " 'Merican system". Actually they
didn't want to learn ether. Well, 30 years has passed with little
improvement, but their grades are much higher.

Duane
Boise State.


>>>

frysingerj@cofc.edu 04/27/02 10:33AM >>>
I'm new to this list so perhaps I've missed previous discussion on this
point. Why are people on this list using non-SI units? It seems rather
archaic to me.

People on this list aren't teaching their science lessons in those units
are
they? Of course, it would be natural if one were refering to a six-inch
crescent wrench purchased at Sears, since that's a trade size and that's
the
way the catalog describes them.

This perhaps relates to a recent ex
pe
rience I had as part of the judging team
for the local regional science fair. I noticed that the vast majority of
high
school projects were metric (though not always SI) but very few of the
middle
school projects used metric units. The students told me that their
teachers
spent a week or two on the SI and then used "normal units" for the rest
of
the lessons that year. And that leads to another mental connection --
American middle schoolers suck swamp water when it comes to
international
co
mpet
itions such as the TIMSS and TIMSS-R. Evaluators of those tests have
included the observation that this relates to lack of effective teaching
and
use of the SI in American schools, among other factors.

While I'm going out on a limb and risking the possibility that my
questions
might anger someone, I'll gratuitously add that I shudder when I see
what I
call "nekkid decimal points" in numbers. I very strongly favor preceding
them
with a zero.

Apologies in advance if I've stepped in anybo
dy's a
ncestral rice bowl. Yes,
I'm competant in such units and can even deal with poundals, slugs and
slinches if need be. I'll hush now and go downstairs for a couple of
gills
(U.S. gills, of course) of coffee.

Jim

On Saturday, 2002 April 27 1129, you wrote:
> Well, I am really not (I must admit) trying to make a slide wire pot.
> What I really want to do is use the wire as a transducer for
> measuring the position of an object that moves along a meter stick.
> (I know, there are better w
ays to d
o this. But my idea will be
> educationally valuable.)
> So, I'd like 100 ohms/ft or 1000 ohms/foot or even 10,000 ohms/foot
> for easy measurement.
>
> **************************************
>
> I recommend to use 18 gauge Chromel-A wire. It is .408 Ohms per foot.
> That is what I use. It is excellent. Jerry

--
James R. Frysinger University/College of Charleston
10 Captiva Row Dept. of Physics and Astronomy
Charleston, SC 29407
66 George
Street
843.225.0805 Charleston, SC 29424
http://www.cofc.edu/~frysingj frysingerj@cofc.edu
Cert. Adv. Metrication Specialist 843.953.7644


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