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- Path: sparky!uunet!gatech!purdue!mentor.cc.purdue.edu!pop.stat.purdue.edu!hrubin
- From: hrubin@pop.stat.purdue.edu (Herman Rubin)
- Newsgroups: sci.math
- Subject: Computational aids. Was: Re: An interesting limit problem.
- Message-ID: <55402@mentor.cc.purdue.edu>
- Date: 29 Jul 92 13:43:51 GMT
- References: <Bs1xzu.DFp@news.cso.uiuc.edu> <1992Jul28.191037.28756@gdr.bath.ac.uk> <1992Jul29.000223.27339@massey.ac.nz>
- Sender: news@mentor.cc.purdue.edu
- Organization: Purdue University Statistics Department
- Lines: 54
-
- In article <1992Jul29.000223.27339@massey.ac.nz> news@massey.ac.nz (USENET News System) writes:
- >In article <1992Jul28.191037.28756@gdr.bath.ac.uk>, mapsj@gdr.bath.ac.uk (Simon Juden) writes:
-
- >> >mattm@lure.latrobe.edu.au writes:
-
- >> [stuff deleted]
-
- >> >Will someone please back me up, and say that no one learning
- >> >Calculus should ever be allowed anywhere _NEAR_ Mathematica?
- >> >(When I say 'learning Calculus' I mean the first two or three
- >> >semesters)
-
- >> I could hardly agree more. Mathematica should be viewed as a fancy calculator
- >> (which, essentially, is what it is). Very good and very useful, BUT undergrads
- >> HAVE to learn basic concepts and manipulative skills before they're let near
- >> it. Otherwise they will never become mathematicians, but rather computer
- >> operators. Also they'll never FULLY understand subtle concepts or follow harder
- >> arguments used in difficult proofs if they haven't had to do things with their
- >> bare hands first. Like any good similar system Mathematica can be very helpful
- >> to the professional mathematician. But I believe such gadgets can also do
- >> irreparable harm unless used appropriately. I also believe children should not
- >> be given calculators until they can do sums without them. But doubtless these
- >> views will get me flamed...
-
- >Since flames were explicitly invited :-), I'll start the ball rolling.
-
- >I believe that it is far more important to understand the meaning of
- >the operations of arithmetic than to be able to work through the
- >algorithms like trained monkeys without having a clue why they work.
- >(I know some bright spark will ask how many monkeys I've trained to
- >do long division - well, no actual monkeys, but a lot of great apes :-)).
-
- I must concur. There is no evidence whatever that learning to compute
- gives any understanding of what the computation does, and why it is done.
-
- A six-year-old can understand the Peano postulates with little difficulty;
- they do not mention anything except counting. Then the understanding of
- what the arithmetic operations mean can be taught. Those who have
- manipulative ability will learn the time-saving mechanics, and those
- who do not are far better served by using calculators.
-
- The situation is worse at the calculus level. As I reported earlier,
- 80% of the undergraduates, having had the full calculus sequence, could
- not use their calculus for relatively routine problems on a take-home
- examination in a probability course I taught.
-
- Only researchers and teachers need to know the mechanics. It is useless
- to know how to differentiate if one does not know what a derivative means.
- No amount of memorizing formulas and tricks helps in understanding.
- --
- Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
- Phone: (317)494-6054
- hrubin@pop.stat.purdue.edu (Internet, bitnet)
- {purdue,pur-ee}!pop.stat!hrubin(UUCP)
-