Re: [MATHEDCC] factoring

RayM (raypublk@san.rr.com)
Fri, 9 Apr 1999 07:09:54 -0700

I think you missed the point. I thought the purpose of school was learning
skills that could be used outside of school, like learning how to use a GUI
interface.
Simple math problem:
What is tuition for one year at YOUR CC?
What is the MTBF of a laptop? (The MTBF of the graphics calculator is
irrelevant:
as you effectively said, it's useless outside of class.)
What fraction of the cost of the laptop should allocated to its use in math
class?
What is the incremental cost of the laptop?

Then
Will the laptop have benefits beyond the narrow confines of math class?
What are the approximate net present values of those uses?
In particular, in a job interview, when I ask, "Do you have experience with
Windows NT?", and the candidate answers, "No, I used a TI-89" what do you
think my response should be?

Finally, do a cost/benefit comparison of a graphics calculator with a
laptop.

----------
> From: Edward Laughbaum <elaughba@math.ohio-state.edu>
> To: RayM <raypublk@san.rr.com>
> Cc: mathedcc@archives.math.utk.edu
> Subject: Re: [MATHEDCC] factoring
> Date: Friday, April 09, 1999 05:36
>
> At 06:24 PM 4/8/99 -0700, RayM wrote:
> [snip]
>
> >As for graphics calculators, I rarely see them. When I walk through LAX
or
> >Dulles, I do see a lot of laptops. I'm part owner of a $12M/yr dollar
> >company and every engineer there strongly prefers his Pentium with 21"
>
> >monitor over any calculator. Most of the machinists use either 4
banger
> >or cheap scientifics. I asked a scientist at SAIC (~$1B/yr) if anyone
used
> >graphics calculators there. The response was, "What's that?" NO ONE
that
> >I know uses graphics calculators. Most employees have a computer on
their
> >desk and everyone has access to at least one computer. I work with a
> >second company of about the same size and I have seen a graphics
calculator
> >there once: a technician was taking a course at a CC and he had to learn
> >how to use the stupid thing. Now that the course is over he is
irritated
> >at the waste of money. Laptops are now selling in the $700 range.
Given
> >that laptops can support email, spell checkers, web browsing, GUI
> >interfaces, CDROM drives, and a very long list of related things that
will
> >be useful in Literature, History, English, Chemistry courses, and life
> >after graduation, my advice would be to use the money that might go into
a
> >graphics calculator to buy the best laptop you can or to upgrade one
that
> >you already own. There may be a few isolated companies where the
graphics
> >calculator culture is strong and I would advise CC instructors to survey
> >industry in their area before devoting much time to using these devices.
> >
> >Ray M
> >raypublk@san.rr.com
> __________________________________________
>
> Ray,
>
> You missed a few very important points about graphing calculators. You
seem
> to have the impression that their only function is to do mathematics. The
> main function of the graphing calculator is that it is a teaching tool.
The
> problem is that many teachers don't yet know how to use it in this way,
so
> it becomes a math tool to them - to do things like checking pencil and
> paper work, a use of lessor importance. Perhaps this was the experience
of
> your technician. Also, if the technician was in a class where the
> instructor was using a traditional text with a graphing calculator, this
> may have caused the irritation because these materials were just not
> designed for the calculator, and are many times inappropriate. Another
> point is that the number of CC students who can afford a notebook at $700
> will fit in a thimble (OK, maybe a room or building). So, a notebook
isn't
> feasible. Finally, calculators now come with FLASK ROM, thus we can now
buy
> educational "software" for our calculators. This will soon include
software
> (applets) in all disciplines. Please note ephasis on the word
"educational
> software." The graphing calculator is a teaching tool that happens to do
math.
>
> I understand your position on the calculator in industry, but I think you
> mis-judged its function in teaching. There is no need to survey local
> industry for their use as a math tool. It is a teaching tool.
>
> Ed
>
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