GOMES, A. S. ; VERGNAUD, Gérard . On the Learning of geometric concepts using Dynamic Geometry...

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Transcript of GOMES, A. S. ; VERGNAUD, Gérard . On the Learning of geometric concepts using Dynamic Geometry...

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    t|hm~b}fhe ha }`n m|i{fek% ]`n|nah|n }`n r~lgnb}r i|n r~tthrnm }h nptofbf} i knhcn}|fb t|htn|}vlnah|n rjn}b`fek ie hlgnb} he }`n rb|nne% @n {|f}nr7 bhct~}n|r t|hqfmn neh|ch~rov feb|nirnm

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    qfn{ ha mfaan|ne} knhcn}|fnr tn|rtnb}fqn jeh{ fe }`n of}n|i}~|n%

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    ricn bhe}np}/ Rb`hneanom (9601& r}i}nr }`i} }`n fe}n|ib}fhe ln}{nne t|ib}fbio (h| nctf|fbio&/ iem

    mnm~b}fqn ib}fqf}fnr onimr }h c~}~io |nfeah|bncne}% @n bherfmn|r }`i} }`n mfb`h}hcv ln}{nne

    nctf|fbfrc iem mnm~b}fhe fe Knhcn}|v fr aiorn iem hlrn|qnr }`i} }`n cigh|f}v ha r}~mne}r

    bherfmn| }`n nctf|fbio iem mnm~b}fqn itt|hib`nr ir rnti|i}n mhcifer/ {f}` }`nf| h{e

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    rvclhor fe { |nt|nrne} ne}f}fnr fe [%

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    ha }`nf| fe}n||noi}fher% ]h ~emn|r}iem }`n ei}~|n ha }`n rvclhofb ilr}|ib}fhe {`fb` cijnr {

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    |nt|nrne}i}fhe a~eb}fher7 ieiovwfek }`n t|hm~b}fhe ha |nt|nrne}i}fher (af|r} mnk|nn a~eb}fher& `n

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    thfe}% ]`n ~rn ha }`n |~on| iem i tif| ha bhctirrnr `ir t|hlilov feao~nebnm lv }`n ah|c r}~mne}r

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    966;: @ow/ 966;&% L~} {n {h~om ofjn }h kh hen r}nt a~|}`n|%

    [n bie hlrn|qn }`i} r}~mne}r ib}nm ir fa }`nv lnofnqnm }`i} i bf|bon fr bne}n|nm he i rnbhem bf|bon

    iem ir fa }`n af|r} |imf~r {ir rcioon| }`ie }`n rnbhem mficn}n|% ]`n|nah|n/ }`nv i|n rnbie} iem

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    bf|bon bne}n|nm fe H tirrfek }`|h~k` I iem i rnbhem bf|bon bne}n|nm fe +i+ tirrfek }`|h~k` L% ]`n

    fe}n|rnb}fhe ha lh}` bf|bonr {ir toibnm he }`n Bil|f m|i{fek (Afk~|n 1&% F} fr boni| }`i}/ fe h|mn|

    }h bi||v h~} }`fr bher}|~b}fhe/ }`n r}~mne}r ennmnm }h mnio {f}` rfkefafbie}ov ch|n knhcn}|fbio

    jeh{onmkn }`ie fe iev fe}n|cnmfi}n r}iknr%

    [n eh}fbnm }`i} ir rhhe ir }`n i|}faib}r bhcthrf}fhe b`ieknr/ }`n|n fr enbnrri|fov i

    }|ierah|ci}fhe ha iev |~onr r~lgibne} }h }`n i|}faib}r h|kiefwnm ib}fher% Bherny~ne}ov/ }`n

    rb`ncn ha ~rn irrhbfi}nm {f}` }`fr fer}|~cne} b`ieknr% [`ne r}~mne}r tirr a|hc ie nctf|fbio

    r}|i}nkv }h i bh||nb} knhcn}|fbio hen/ }`n {`hon r~lgibne} bhebnt}~iofwi}fhe b`ieknr

    m|ici}fbioov% ]`n rb`ncnr i|n eh} h|kiefwnm rfctov lirnm he jeh{onmkn |nki|mfek }`n frhrbnonr}|fiekonr }hthohkv iem he onek}` qi|fi}fher% M~|fek i bh||nb} bher}|~b}fhe/ he }`nf| }`f|m

    i}}nct}/ }`nv cnir~|nm }`n rnkcne} ZILS/ iem }`ne }`nv m|n{ ieh}`n| rnkcne} {f}` npib}ov }`n

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    RNKCNE] MNA < T]R }hho% ]`fr ib}fhe fr h|kiefwnm r}i|}fek a|hc }`n fmni }`i} }`n bf|bon fr }`n

    ohb~r ha }`n ny~fmfr}ie} thfe}r ha i thfe} iem }`i}/ fe ti|}fb~oi|/ }`n thfe}r ha fe}n|rnb}fhe

    ln}{nne i bf|bon iem ieh}`n| bf|bon bne}n|nm he }`n af|r} mnafen ie frhrbnonr }|fiekon ferb|flnm

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    fean|r iem ieiovrn }`n rf}~i}fher/ {n bie nqio~i}n `h{ ie nm~bi}fheio fe}n|aibnr/ i ti|}fb~oi|

    rvr}nc ha fer}|~cne}r/ aiqh~| }`n ncn|knebn ha rtnbfafb bhebnt}~iofwi}fher%

    Fe ]ilon 2/ {n toibn }{h rf}~i}fher fe }`n ricn bho~ce/ iem ~rn rvclhor }h femfbi}n }`n rvr}nc

    ha fer}|~cne}r {f}` {`fb` }`n feqi|fie}r ittni|7 \B ah| |~on| iem bhctirrnr/ iem B ah| Bil|f% Fa

    }`n ricn feqi|fie} ittni| fe lh}`/ {n ~rn }`n eh}i}fhe B#\B% Fe }`n af|r} bho~ce/ {n femfbi}n }`n

    bhebnt}r iem }`nh|ncr fe ib}fhe }`i} ittni| m~|fek }`n ~rn ha i} onir} hen rvr}nc ha fer}|~cne}r7

    cifeov ipfio rvccn}|v (IR&/ bf|bon (B\&/ }|fiekon (]K&/ frhrbnonr }|fiekon (F]&/ iem cnmfi}|fp

    (C]&%

    ]ijfek i ohhj i} }`fr }ilon/ hen bie fccnmfi}nov rnn }`i} }`n oni|efek t|hqfmnm lv Bil|f iem lv

    }`n |~on| iem bhctirrnr fr ti|}fb~oi|% ]`n bhebnt}~iofwi}fhe ncn|kfek a|hc }`n ~rn ha nib`

    rvr}nc ha fer}|~cne}r fr mfaan|ne}% Fa f} {n|n h}`n|{frn/ }`n|n {h~om ln i k|ni}n| e~cln| ha B#\Br t|nrne}nm he }`n }ilon% Ah| nib` rvr}nc/ }`n ~rn|r ~rnm mfaan|ne} t|htn|}fnr ha }`n ricn

    ci}`nci}fbio bhebnt}r% Nib` fe}n|aibn `ir f}r h{e rbhtn ha qio~n ah| }`n }nib`fek iem oni|efek

    ha i rtnbfafb bhebnt}% [|hek htn|i}fheio feqi|fie}r {n|n hlrn|qnm heov {`ne r}~mne}r ~rnm

    |~onr iem i tif| ha bhctirrnr (C]#4;/ C]#40 iem IR#92&% ]`fr rvr}nc rnncr ch|n aonpflon fe

    ~rn/ fem~b}fek febo~mfek {|hek ~rikn% He }`n htthrf}n iem/ Bil|fr fe}n|aibn fr ch|n |nr}|fb}fqn

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