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Assessering

Leeruitkomstes(LUs)
LU 1
Getalle, Bewerkings en VerwantskappeDie 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.
Assesseringstandaarde(ASe)
Ons weet dit as die leerder:
1.1 die historiese ontwikkeling van getallestelsels in ’n verskeidenheid historiese en kulturele kontekste (insluitend plaaslik) kan beskryf en illustreer;
1.2 rasionale getalle (insluitend baie klein getalle in wetenskaplike notasie) herken, gebruik en kan voorstel en gemaklik tussen ekwivalente vorms in geskikte kontekste kan beweeg;
1.3 probleme in konteks kan oplos, insluitend kontekste wat gebruik kan word om bewustheid by leerders te onwikkel van ander leerareas sowel as van menseregte, sosiale, ekonomiese en omgewingskwessies soos:
1.3.1 finansiële kontekste (insluitend wins en verlies, begrotings, rekeninge, lenings, enkelvoudige en saamgestelde rente, huurkoop, wisselkoers, kommissie, verhuring en die bankwese);
1.3.2 metings in die konteks van Natuurwetenskappe en Tegnologie;
1.4 probleme oor verhouding, koers en eweredigheid (direkte en omgekeerde) oplos;
1.5 skat en bereken deur geskikte bewerkings vir probleme te kies en te gebruik en die redelikheid van resultate te beoordeel (insluitend meetprobleme wat rasionale benaderings van irrasionale getalle behels);
1.6 ’n verskeidenheid tegnieke en instrumente (insluitend tegnologie) gebruik om berekeninge doeltreffend en met die nodige mate van akkuraatheid te doen, insluitende die volgende reëls en betekenisse van eksponente (leerders behoort in staat te wees om hierdie reëls en betekenisse slegs in berekeninge te gebruik):
1.6.1 x n × x m = x n + m
1.6.2 x n x m = x n – m
1.6.3 x 0 = 1
1.6.4 x –n = 1 x n size 12{ { {1} over {x rSup { size 8{n} } } } } {}
1.7 die eienskappe van rasionale getalle herken, beskryf en gebruik.

Memorandum

TOETS: GETALLESTELSELS DATUM: NAAM:

Aan watter versameling (s) behoort elke getal? Vereenvoudig die getalle, indien nodig, en voltooi dan die tabel deur kruisies onder alle gepaste kolomopskrifte te maak.

TOETS – Memorandum

Memoranda

KLASOPDRAG

1.1 Ja; enige informele “bewys” is aanvaarbaar.

1.2 Soos 1.1

1.3 Nou kom nul en negatiewe getalle te voorskyn. Die verduideliking is nie ter sake nie – slegs die feit dat die leerder daaroor dink.

2.1 N 0 = {0 ; 1 ; 2 ; . . . } en Z = { . . . –3 ; –2 ; –1 ; 0 ; 1 ; 2 ; 3 ; . . .}

3 Nou kom breuke ook te voorskyn. Maak duidelik dat heelgetalle ook as breuke geskryf kan word, en dat dit dikwels handig is om dit so te doen.

4.1 Nie alle leerders sal hier sukses behaal nie. R ` is die antwoorde wat ons kry as ons die vierkantswortel (onder andere) van ‘n negatiewe getal neem.

TAAK

2. Wys leerders daarop dat nul ontbreek uit die tabel.

HUISWERKOPDRAG

1. Beklemtoon dat nul benodig word:

Die konsep van plekwaardes is streng afhanklik van die waarde nul.

Dit skei negatiewe en positiewe getalle.

Dit stel “niks” voor.

Dit word algebraïes gedefinieer as a + (– a ).

Mens kan hier vertel dat die gedagte en simbolisering van nul uit die Ooste gekom het.

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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Source:  OpenStax, Wiskunde graad 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11055/1.1
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