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Wiskunde

Ruimte en vorm

Opvoeders afdeling

Memorandum

23.1... die een helfte van die figuur presies nes die ander helfte lyk

23.2

(a);

(d)

(e)

23.4 onbeperkte getal

Leerders afdeling

Inhoud

Aktiwiteit: simmetrie [lu 3.5]

23. SIMMETRIE

23.1 Kom ons hersien!

Voltooi: ’n Figuur is simmetries as ______________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

23.2 Watter van die volgende figure is NIE simmetries nie? Trek ’n groot kruis bo-oor elkeen.

a)

b)

c)

d)

e)

f)

23.3 Teken die simmetrie-asse van die volgende figure in:

a)

b)

c)

d)

e)

f)

23.4 Hoeveel simmetrie-asse het ’n sirkel? ____________________________________________________________________

23.5 Soek in ’n koerant / tydskrif verskillende voorbeelde van motor-embleme en knip hulle netjies uit. Plak hulle vas in die blok hieronder. Maak ’n duidelike regmerk by dié wat simmetries is.

Assessering

Leeruitkomste 3: Die leerder is in staat om eienskappe van en verwantskappe tussen twee-dimensionele vorms en drie-dimensionele voorwerpe in ‘n verskeidenheid oriëntasies en posisies te beskryf en voor te stel.

Assesseringstandaard 3.5: Dit is duidelik wanneer die leerder transformasies (rotasies, refleksies en verplasings) en simmetrie gebruik om die eienskappe van meetkundige figure te ondersoek (alleen en/of as ‘n lid van ‘n span of groep).

Questions & Answers

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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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