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Wiskunde

Vermenigvuldiging en deling

Vermenigvuldiging

Opvoeders afdeling

Memorandum

Leerders afdeling

Inhoud

Aktiwiteit: om probleme in konteks op te los [lu 1.6]

Om ‘n reeks tegnieke te gebruik om berekeninge te doen [lu 1.10.1, lu 1.10.5]

1. Verdeel in groepe van drie. Vra jul opvoeder vir die nodige folio en bereken die antwoorde van die volgende probleme SONDER ‘n sakrekenaar:

    1. Die Johnny-gesin se telefoonrekening is elke maand ongeveer R376. Wat sal hulle min of meer in ‘n jaar vir die gebruik van die telefoon moet betaal?
    2. Mnr. Naidoo reis elke maand 795 km per motor vir sy werk. Wat is die afstand wat hy in een en ‘n halwe jaar sal aflê?
    3. Die Graad 7’s gaan toer en elke leerder moet R499 betaal. Watter bedrag sal 78 leerders altesaam betaal?
    4. Die “Ry Veilig” -taxi-groep vervoer passasiers teen R245 per passasier na ‘n sokkerwedstryd in Johannesburg. As 837 toeskouers van hul diens gebruik maak, watter bedrag betaal hul altesaam?
    5. ‘n Olifantkalfie weeg 932 kg. Hoeveel sal 348 olifante altesaam weeg?
  1. Kontroleer jul antwoorde met ‘n sakrekenaar.
  2. Verduidelik aan die res van die klas hoe julle groep die antwoorde bereken het.
  3. Vergelyk jul metodes. Hoe verskil hulle van mekaar?

GROEPASSESSERING

Beoordeel jul werk op ‘n skaal van 1 – 4 deur die toepaslike syfer te omkring:

  1. = benodig aandag

2 = redelik goed

3 = baie goed

4 = uitstekend

Kriteria

Alle groeplede het aan die aktiwiteite deelgeneem. 1 2 3 4
Lede van die groep het na mekaar geluister. 1 2 3 4
Groeplede het mekaar in die groep gehelp en aangemoedig. 1 2 3 4
Groeplede het by die opdrag gebly. 1 2 3 4
Elkeen het ‘n kans gekry om te praat. 1 2 3 4
Die groep se werk is netjies gedoen. 1 2 3 4
Die antwoorde is korrek bereken. 1 2 3 4

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.6: probleme oplos in konteks, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingskwessies;

Assesseringstandaard 1.10: Dit is duidelik wanneer die leerder ‘n verskeidenheid tegnieke gebruik om sowel skriftelike as hoofberekeninge met heelgetalle te doen, insluitend:

1.10.1: vermenigvuldiging in kolomme;

1.10.5: gebruik van ‘n sakrekenaar.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Mueller Reply
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Nel Reply
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Nel Reply

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Source:  OpenStax, Wiskunde graad 6. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11072/1.1
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