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- Newsgroups: misc.education,sci.astro,sci.bio,sci.chem,sci.math,sci.physics
- Subject: Re: What can we have for an educational system?
- Message-ID: <1992Nov17.172851.1@agri.huji.ac.il>
- From: marder@agri.huji.ac.il
- Date: 17 Nov 92 17:28:51 IST
- References: <13NOV199209234042@csa1.lbl.gov> <Bxo96q.HFv@mentor.cc.purdue.edu>
- <1992Nov13.220752.22474@alchemy.chem.utoronto.ca> <BxrEzG.3Cn@mentor.cc.purdue.edu>
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- Organization: The Hebrew University of Jerusalem - Faculty of Agriculture
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- In article <BxrEzG.3Cn@mentor.cc.purdue.edu>, hrubin@pop.stat.purdue.edu (Herman Rubin) writes:
- [ ... ]
- >
- >>>There are those who deride calculators; but it is more
- >>>important to teach Johnny WNEN to add than HOW to add. Calculators and
- >>>computers have made much of what is now emphasized almost irrelevant.
- >
- >> I disagree. Unless you do at least some drill, how are you
- >>supposed to distinguish plausible from implausible answers? Drill
- >>reinforces intuition about this sort of thing. In other words, you
- >>have to have some facility with arithmetic to make ballpark estimates
- >>of what number should be dropping out of a given calculation.
- >
- As they say, anyone can make a mistake, but it takes a computer to really
- screw things up!
- The human element is important to pick up the unexpected.
- (e.g. that $10,000,000 bonus in Joe Poor's pay check). In the good old
- days of slide-rules and log tables, I think that most of us did a ball-park
- calculation to make sure we weren't a couple of orders of magnitude out.
- I suspect that many calculator users don't check the answer, and therefore
- don't pick up their own keying errors.
- --
- ' Jonathan B. Marder
- Internet: MARDER@AGRI.HUJI.AC.IL | Department of Agricultural Botany
- Bitnet: MARDER@HUJIAGRI | /\/ The Hebrew University of Jerusalem
- Phone: (08 or +9728) 481918 |/ \ Faculty of Agriculture
- Fax: (08 or +9728) 467763 / P.O.Box 12, Rehovot 76100, ISRAEL
-