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• GETSenPhaseMaths

This module is included inLens: Siyavula: Mathematics (Gr. 7-9)
By: Siyavula

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# Vergelyk groottes

Module by: Siyavula Uploaders. E-mail the author

## Memorandum

 3 cm 2 cm 10 cm 6 cm 6 cm 4 cm 20 cm 24 cm 9 cm 6 cm 30 cm 54 cm 15 cm 10 cm 50 cm 150 cm
3. (a)

(b) 2 keer meer; 3 keer meer;

5 keer meer as eerste reghoek

(c) 16 keer

4.2.1 – 4.2.4 Kontroleer leerders se poging

## Inhoud

### AKTIWITEIT: Vergelyk groottes [LU 4.2, LU 3.8]

3. KOM ONS VERGELYK GROOTTES!

Die volgende reghoek is eers twee keer, dan drie keer en dan vyf keer vergroot.

Al die reghoeke het dieselfde verhouding vir lengte tot breedte: 3:2

a) Kyk nou weer na die reghoeke hierbo. Gestel elke blokkie is 1 cm by 1 cm. Voltooi die tabel.

 Reghoek Lengte Breedte Omtrek Oppervlakte 1 ____________ ____________ ____________ ____________ 2 ____________ ____________ ____________ ____________ 3 ____________ ____________ ____________ ____________ 4 ____________ ____________ ____________ ____________

b) Wat gebeur met die omtrek soos die reghoek elke keer vergroot?

_____________________________________________________________________

_____________________________________________________________________

c) Hoeveel keer is die oppervlakte groter as jy die reghoek vier keer vergroot?

_____________________________________________________________________

4.1 Het jy geweet?

Die verhouding op skaal word altyd in ’n bepaalde volgorde geskryf:

Die eerste getal hou verband met die tekening / plan.

Die tweede getal hou verband met die werklike lewe.

’n Skaal van 1 : 5 beteken die lengte is 5 maal kleiner as in die werklike lewe.

’n Skaal van 5 : 1 beteken die lengte is 5 maal groter as in die werklike lewe.

4.2.1 Gebruik die blokkiespapier en vergroot die skets op ’n skaal van 4:1.

4.2.2 Vergroot hierdie tekening op ’n skaal van 1 : 2.

4.2.3 Verklein die skets tot skaal 2 : 1.

4.2.4 KOPKRAPPER!

• Kan jy hierdie tekening vergroot en oorteken?

## Assessment

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 3.8: Dit is duidelik wanneer die leerder posisie/ligging op koördinaatstelsels (geordende roosters) en kaarte bepaal.

Leeruitkomste 4:Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.

Assesseringstandaard 4.2: Dit is duidelik wanneer die leerder probleme oplos.

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##### Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

##### What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

##### Who can create a lens?

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##### What are tags?

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

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