Subject:
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Re: Chirality
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Newsgroups:
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lugnet.edu
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Date:
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Fri, 9 Sep 2005 08:24:18 GMT
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Viewed:
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11185 times
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In lugnet.build.schleim, Anita Eenink wrote:
> In lugnet.build.schleim, Didier Enjary wrote:
> > LEGO and chirality
> >
> > Chirality is the property of an object that can not be superimposed on its
> > mirror image. Examples includes both natural (biological) object such hands and
> > cultural (technical) object such screws.
> >
> > A non-chiral (achiral) object can be superimposed on its mirror image, that
> > means it has one or more plane of symmetry.
> >
> > One chiral object and its counterpart are called enantiomers.
> >
> > Chirality is common studied property in science (chemistry, mathematics) but
> > also in arts (M.C. Escher)
> >
> >
> > 1) Most of the LEGO parts are symmetric.
> >
> > Plates, Bricks, Slopes, Beams, Axles, Gears, are all achiral parts
> >
> >
> > 2) Some are chiral and both enantiomers are produced by TLC (they are called
> > left and right enantiomer) :
> >
> > Doors, wings, wedges, minifig arms
> >
> >
> > 3) A few are chiral and only one enantiomer is produced by TLC
> >
> > Technic worm screw, some minifig accessories (camera), patterned parts
> >
> >
> > When both enantiomeric part are produced, they are generally intended to be used
> > at the same time to create a symmetric structure : Cars with both right and left
> > doors, planes with both right and left wings. But it exists some creative ways
> > to use only right or left enantiomeric part for example by creating a chiral
> > superstructure as spiral staircase.
> >
> >
> > Any thoughts ?
>
> I will never look at my bricks the same.... what a great idea for a lesson plan,
> I have written it down to tell my sister (a secondary science teacher), I am a
> training early childhood so chirality isn't on the curriculum :(. Is there
> nothing lego can not teach us. Thanks
>
> Anita
Hi Anita,
Thank you for your answer, it has made my day brighter as I like the ideas you
talk about.
- Being open minded as you are ("I will never look at my bricks the same")
- Sharing ideas
- LEGO as a smart toy and teaching tool
Didier
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Message is in Reply To:
 | | Re: Chirality
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| (...) I will never look at my bricks the same.... what a great idea for a lesson plan, I have written it down to tell my sister (a secondary science teacher), I am a training early childhood so chirality isn't on the curriculum :(. Is there nothing (...) (21 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts)
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