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The future of handheld scientific and graphing calculators (or pen + paper, for that matter) 7

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SNORGY

Mechanical
Sep 14, 2005
2,510
I had a few days off over the holidays, so passing the time in front of NFL football and World Junior hockey on TV (-25 C outside...), I started transferring iPad apps onto my new iPad Air. While doing this, I decided to search for new apps that emulate graphing calculators. I now have four such on both iPads: RCL-59 (TI-59), i41CX+ (HP-41CX), i48 (HP-48GX) and HP50G (HP-50g).

I went through university using a TI-59, and I have never been converted to the RPN cult, which gave rise to the purchase of my post-university calculators, both TI: a TI-81 and the one I use now, a TI-89 Titanium. In light of that, and perhaps because I am now in a physical and cerebral midlife crisis, I rationalized that having the three HP emulators wouldn't do me much good without having the original calculator manuals, so I found and downloaded all of them in PDF format - in aggregate, thousands of pages of documentation. Feeling nostalgic, I decided to pick up my TI-89-T and teach myself how to program it, which is something I always wanted to do but never took the time. I hooked it up to the PC and refreshed myself with the associated TI Connect software and various user documentation. After an evening spent between that and doing some on-line web searching related to a gamut of pseudo-related topics, I came across some articles and points of view that were thought-provoking and somewhat disturbing.

There is a rapidly growing camp that shares the opinion that handheld calculators of any kind are already obsolete, and have been for about a decade. But for the fact that educators mandate their use (by association, forbid the use of iPads, iPhones, PDA devices and certain models of scientific / graphing handhelds) on examinations, there would no longer be a market for them. More disturbing was the suggestion that Texas Instruments has been able to gain and maintain the vast majority of the market share by working collaboratively with educators and textbook authors to implement an educational system in which the course material in math and science curriculae is integrated with their technology, indeed to the point where you need one in order to succeed in the other. It is further suggested that this alone will perpetuate the necessity and, therefore, existence of calculators (particularly TI calculators) long beyond what would otherwise spell their demise. This might explain why you don't find a lot of TI calculator apps for the iPad or iPhone, since it wouldn't make a lot of sense to spend several hundreds of dollars on a device when an equivalent app could be purchased for 5% of the cost.

I personally like calculators. I like the look and feel of them, and I like the fact that they do exactly what they are designed to do (for the most part - bugs aside). I like picking up a pencil, ruler, eraser and calculation paper pad and solving a problem, using a calculator to the extent required in support of this endeavour. However, I have an iPad at work with numerous good apps installed - Math Studio for example - that replaces a lot of the functionality that my calculator used to have. I also have a PC workstation with two big screens and MS Office. I am now in a mode at work where most of the time I spend pushing buttons on my TI-89-T is in a conference room in design review meetings; even then, I often pull out my iPhone for unit conversions because using the app is faster than pushing the buttons on the calculator.

My question is twofold (threefold maybe):

After graduating from school, are handheld calculators worthless due to their apparent obsolescence relative to emerging technologies?

For that matter, is the combination of "calculation paper + pencil + eraser + ruler + calculator" obsolete and worthless?

With the increased use of and dependence on current and emerging technologies, are we still nevertheless educating students and producing practitioners that "can do the math" rather than simply "correctly enter the data" and, if indeed we are, then are folks like me who still "go retro" and "do things Old School" becoming more worthless and obsolete?
 
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I had a slide rule in college and moved to an HP-95 just as I was getting my masters. I then had an HP-97 where I worked. Those eventually gave up the ghost and I have been using an HP-20S for probably about the last 20 years. While I do a lot with spreadsheets on the computer and have also done some significant programming in various assignments, the HP is great for those quick sort-of one-off calculations that aren't worth going through the spreadsheet for. I probably do more on the calculator than is sometimes logical, but it feels more like an extension of my brain rather than this separate box feel that you get with the computer. It lives in my briefcase and I suspect I use it more days than I don't in the office.
 
Pencil and paper remain the most useful tools on an engineer's desk. If you can't estimate the answer with those tools, you shouldn't trust the answer you get with an electronic device. As a stress analyst mentoring apprentices, I insist that they use Roark & Young and Peterson to estimate upper and lower bounds on the answers they expect to get from ANSYS.

Slide rules were definitely becoming rare when I was in college ('81-'87) but after the batteries died during a test, I started taking two calculators and a slide rule to tests. Before I finished, I needed to use the slide rule on one exam.

Doug
 
As a young guy, often I use pen + paper + cheap calculator for a quick calc. There's value in that, but there's really no value in knowing how to use a graphing calculator; it's just a less intuitive, less transparent, less ergonomic version of Mathcad/excel/etc... Haven't touched since third year university.
 
Canwesteng, I'm the same way. I had a TI-89 throughout school. The FE exam required me to buy something different, and I chose the Casio fx-115ES. I used the TI-89 at the start of my career but never the graphing functions and then the annoyance of changing batteries got to me and I'm now using my Casio again. Now I own 3 and use all three of them.
 
There will always be basic handheld calculators as they are just too handy.

But scientific calculators , in my view , have just no real use when we are never more than a few feet away from a screen that
can run immensely more powerful number crunching apps. Other than test taking of course.

I prefer to use speq mathematics or freemat .

Who want's to buy a ti89 cheap ?
 
[cry] my company's firewall blocks the speq math website as porn...

TTFN
faq731-376
7ofakss

Need help writing a question or understanding a reply? forum1529

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
 
Too bad IR.

They provide a no install version, really handy for places with rabid IT people.

I once had a filter block a site because it was categorized " Educational ".

Can't have any of that now can we..


 
yeh, but they don't block ET, do they ;-)

TTFN
faq731-376
7ofakss

Need help writing a question or understanding a reply? forum1529

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
 
Coming back to the early comment about most curricula and textbooks beeing written around handheld calculators*, what calculating tool SHOULD a textbook assume?
I'd say excel. I don't like it that much, but excel probably is the most used calculating tool in the engineering community. Why not start working with it properly in school?
(of course, for universites there's the headache of allowing laptops in exams and the possibilities of cheating, which I'm not sure is a solvable problem)

I think many other powerful tools (like python, fortran, matlab) are far less ubiquitous, building the education around them would be far riskier for the student.

There's problems with excel (unreadable formulae, microsofts almost monopoly). Could you write a textbook or curriculum that assumes the student has access to some powerful computing tool, without specifying which?

* Over here (Germany) we were only allowed non-programmable calculators for exams. Don't know if all univerisites do it like this + and it was a while back.
 
My opinion is a spreadsheet is a poor environment for doing engineering calcs of any significant complexity.

I think students would be better served by introducing them to a mathematically oriented scripting language right at the start.

Scilab or Octave with Scilab getting the nod at this point for having an integrated gui environment, both are free.

It seems like most textbooks for college level are migrating to Matlab as a numerical environment.
 
While Excel might be OK if you're sitting at home doing homework, a calculator is still the only option in an exam at school. TI-83, TI-89, and its ilk fit a good price bracket for high school and college students, so that's what they teach. Since we presumably don't want our teachers to spend their class time debugging why some random brand of calculator isn't producing the same result as the rest of the class is getting, they standardize on a single make and brand. And, since cheating is so common, they restrict it to non-programmable calculators.

TTFN
faq731-376
7ofakss

Need help writing a question or understanding a reply? forum1529

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
 
I am a firm believer that first pass calculations should be done without a calculator or a computer. By all means bust out your FEA or whatever after you have a clear thought process in place.
 
IRStuff,

I agree with your post up until the point where you said non-programmable. The TI (and just about any other brand) graphing calculators are quite programmable. I had an HP 49 through college, and the program for solving beams (both determinate and indeterminate) was a lifesaver for me on more than one assignment.
 
Spreadsheets are very clumsey with complex numbers, where my TI68 has much fewer problems.

Still use the spreadsheet for forms, but for the one or two calculations, the calculator works well.
 
There will never be a replacement for the cocktail napkin sketch.
 
fegenbush,

You're right. I forgot that we had to buy a Casio for his Algebra 2 class because it was non-programmable, and a TI-83 for his Pre-Calculus, because it was programmable and graphing.

TTFN
faq731-376
7ofakss

Need help writing a question or understanding a reply? forum1529

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
 
I use a spreadsheet when I need to do multiple calculations, but I still use my calculator to test the formulas in my spreadsheets.
 
A handheld calculator will be required for the immediate future if one is sitting for the FE or PE exam.
 
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