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Wiskunde

Nog meetkunde, datahantering en waarskynlikheid

Opvoeders afdeling

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

Leerders afdeling

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.

Questions & Answers

what is biology
Hajah Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
what is biology
Victoria Reply
HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
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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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