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

 Subject: Re: [Edu-sig] thought re graphing calculators ... Gregor Lingl Tue, 29 Sep 2009 18:15:53 +0200
 ``` 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 point (imho). ``` ```Yes, it's a philosophical point. Doing it manually would be error prone so the "correct" way is more science fiction or fantasy than a reality. The older ways of teaching math set up some false expectations, and then when reality fails to make good, reality gets blamed, instead of the broken metaphysics behind much of "modern" math. Kirby ``` ```Regards, Gregor # Author: Gregor Lingl # amended to use Decimal by Kirby Urner 2009-09-28 # re-corrupted to show the vainness (in principle) of kirby's effort ``` ```# fixed to show robustness of engineering solutions vs. imaginary superpowers of non-existent math gods ``` ```2009-09-28 # Date: 2009-06-24 # A demonstration of chaos from turtle import * from decimal import Decimal ``` ``` from turtle import * from decimal import Decimal, getcontext getcontext().prec = 50 :) Kirby ``` ```Strategy of escalation? Arms race? from turtle import * from decimal import Decimal, getcontext getcontext().prec = 50 k = Decimal('3.9') N = 250 That's what I meant with (in principle) Gregor _______________________________________________ Edu-sig mailing list Edu-sig@xxxxxxxxxx http://mail.python.org/mailman/listinfo/edu-sig ```
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