Re: [Edu-sig] thought re graphing calculators ...

2009-09-30 Thread Edward Cherlin
On Wed, Sep 30, 2009 at 3:04 AM, Brian Blais wrote: > On Sep 28, 2009, at 16:30 , Gregor Lingl wrote: > > Brian Blais schrieb: > >  However, as I think > about it, I can not think of a single problem where I *needed* the > graphic calculator, or where it gave me more insight than I could do > by h

Re: [Edu-sig] thought re graphing calculators ...

2009-09-30 Thread kirby urner
On Wed, Sep 30, 2009 at 1:39 AM, Edward Cherlin wrote: << trim >> >> Yes, these have been interesting discoveries and remain highly >> relevant in the workaday world.  The idea of closure makes perfect >> sense in this world of types (Python is a typed language).  Is a * b >> always going to yie

Re: [Edu-sig] thought re graphing calculators ...

2009-09-30 Thread Brian Blais
On Sep 28, 2009, at 16:30 , Gregor Lingl wrote: Brian Blais schrieb: However, as I think about it, I can not think of a single problem where I *needed* the graphic calculator, or where it gave me more insight than I could do by hand. I think I have a counterexample. Run the script, that y

Re: [Edu-sig] thought re graphing calculators ...

2009-09-30 Thread Edward Cherlin
On Tue, Sep 29, 2009 at 8:13 PM, kirby urner wrote: >> Since say 5000 years humans have devoloped the concepts of numbers, >> calculations and >> algebra. They have discovered, that calculations obey certain algebraic laws >> like >> a*(b+c) = a*b + a*c and the like. Finally they have devoloped th

Re: [Edu-sig] thought re graphing calculators ...

2009-09-29 Thread kirby urner
On Tue, Sep 29, 2009 at 5:58 PM, Gregor Lingl wrote: >> The ability to brute force these data points with a self-feedback >> circuit governed by various expressions, is for computers and >> computers only.  Humans by themselves aren't even in the game.  At the >> very least you'll want an abacus,

Re: [Edu-sig] thought re graphing calculators ...

2009-09-29 Thread Gregor Lingl
kirby urner schrieb: On Tue, Sep 29, 2009 at 9:15 AM, Gregor Lingl wrote: Strategy of escalation? Arms race? Not so much. There's nothing on the other side. Will anyone do this manually? Is that what "correctly" means? More likely they mean something like "symbolically" which i

Re: [Edu-sig] thought re graphing calculators ...

2009-09-29 Thread kirby urner
On Tue, Sep 29, 2009 at 9:15 AM, Gregor Lingl wrote: > > > Strategy of escalation? Arms race? > Not so much. There's nothing on the other side. Will anyone do this manually? Is that what "correctly" means? More likely they mean something like "symbolically" which is akin to "just imagining so

Re: [Edu-sig] thought re graphing calculators ...

2009-09-29 Thread Gregor Lingl
kirby urner schrieb: On Mon, Sep 28, 2009 at 4:03 PM, kirby urner wrote: On Mon, Sep 28, 2009 at 3:12 PM, Gregor Lingl wrote: ... That's fine (for the turtle). But if someone thinks that everything is calculated "correctly" now, she/he is bound to get disappointed. And that's the po

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Edward Cherlin
On Mon, Sep 28, 2009 at 12:49 PM, kirby urner wrote: > 2009/9/28 Brian Blais : > > << trim >> > >> Just a month ago, a friend of mine who homeschools her children was asking >> me about graphing calculators.  Apparently the math curriculum she uses has >> a number of graphic calculator exercises.

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
There's this option too, some others: http://matplotlib.sourceforge.net/ Then Sage actually has 3D stuff too e.g.: sage.plot.plot3d.platonic.cube(center=(0, 0, 0), size=1, color=None, frame_thickness=0, frame_color=None, **kwds) to render a 3D cube centered at the origin with default side lengt

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Charles Cossé
Yup, similar experience here. And graphing calculators have now been promoted to the point where their importance is probably no longer questioned ... which is too bad ... There are many ways to graph python-generated computer data. I have dabbled with many, but for various reasons I continue to

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
On Mon, Sep 28, 2009 at 4:03 PM, kirby urner wrote: > On Mon, Sep 28, 2009 at 3:12 PM, Gregor Lingl wrote: >> >> >> kirby urner schrieb: Hi Brian, >>> >>> This ran perfectly on Python 3.1rc1 (r31rc1:73069, May 31 2009, >>> 08:57:10) on my WinXP box (one of a few). >>> >>>

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
On Mon, Sep 28, 2009 at 3:12 PM, Gregor Lingl wrote: > > > kirby urner schrieb: >>> >>> Hi Brian, >>> >>> >> >> This ran perfectly on Python 3.1rc1 (r31rc1:73069, May 31 2009, >> 08:57:10) on my WinXP box (one of a few). >> >> Note:  if this level of chaos / noise bothers you (the functions a

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Gregor Lingl
kirby urner schrieb: Hi Brian, This ran perfectly on Python 3.1rc1 (r31rc1:73069, May 31 2009, 08:57:10) on my WinXP box (one of a few). Note: if this level of chaos / noise bothers you (the functions are algebraically the same, after all), then I recommend using the decimal type inste

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
On Mon, Sep 28, 2009 at 12:18 PM, Jeff Rush wrote: << trim >> > My hobby in high school was (simple forms of) relativity and orbital > mechanics due to a strong SF interest, so the first program I ever wrote > was a time dilation graphing (using punctuation characters) program for > trips to nea

[Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
> Hi Brian, > > I think I have a counterexample. > Run the script, that you can find here: > > http://svn.python.org/view/*checkout*/python/branches/release26-maint/Demo/turtle/tdemo_chaos.py?revision=73559&content-type=text%2Fplain > > (or below.) Runs with Python 2.6 or later. > It certainly coul

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
<< trim >> > Well, the curricula have been customized to fit what the calculator > can do, with encouragement towards the more upscale models that do > some graphing and CAS (fractor equations, solve integrals...).  A lot > of what passes for "math" in this day and age is just a glorified > calcul

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Gregor Lingl
Brian Blais schrieb: On Sep 27, 2009, at 19:38 , Charles Cossé wrote: Hi, this has probably been discussed to death already, but maybe not: The point at which fancy graphing calculators become "necessary" (ie as in one's student career) is the point at which the calculator should be abandon

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread kirby urner
2009/9/28 Brian Blais : << trim >> > Just a month ago, a friend of mine who homeschools her children was asking > me about graphing calculators.  Apparently the math curriculum she uses has > a number of graphic calculator exercises.  My advice was to buy a nice > solar-powered scientific calcula

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Jeff Rush
Brian Blais wrote: > On Sep 27, 2009, at 19:38 , Charles Cossé wrote: > > Her kids should do the > exercises by hand, on graph paper instead. Anything that is hard enough > for you to use a graphic calculator can be done much more easily with a > computer. Agreed, > After giving her this advi

Re: [Edu-sig] thought re graphing calculators ...

2009-09-28 Thread Brian Blais
On Sep 27, 2009, at 19:38 , Charles Cossé wrote: Hi, this has probably been discussed to death already, but maybe not: The point at which fancy graphing calculators become "necessary" (ie as in one's student career) is the point at which the calculator should be abandoned and Python employe

Re: [Edu-sig] thought re graphing calculators ...

2009-09-27 Thread michel paul
2009/9/27 kirby urner : This isn't the kind of critique most people have in mind when they > start questioning the hegemony of the graphing calculator empire. > > Definitely not, but what a great perspective, pun intended. - Michel 2009/9/27 Charles Cossé : > > Hi, this has probably been discus

Re: [Edu-sig] thought re graphing calculators ...

2009-09-27 Thread Edward Cherlin
2009/9/27 Charles Cossé : > Hi, this has probably been discussed to death already, but maybe not: The > point at which fancy graphing calculators become "necessary" (ie as in one's > student career) is the point at which the calculator should be abandoned and > Python employed.  Just a thought ...

Re: [Edu-sig] thought re graphing calculators ...

2009-09-27 Thread kirby urner
2009/9/27 Charles Cossé : > Hi, this has probably been discussed to death already, but maybe not: The > point at which fancy graphing calculators become "necessary" (ie as in one's > student career) is the point at which the calculator should be abandoned and > Python employed.  Just a thought ...

[Edu-sig] thought re graphing calculators ...

2009-09-27 Thread Charles Cossé
Hi, this has probably been discussed to death already, but maybe not: The point at which fancy graphing calculators become "necessary" (ie as in one's student career) is the point at which the calculator should be abandoned and Python employed. Just a thought ... delete at will ! -Charles -- As