<< Chapter < Page Chapter >> Page >

2. Gebruik nou jou sakrekenaar en kyk of jy in die kol was.

Aktiwiteit 9:

Om probleme in konteks te kan oplos [lu 1.6.1]

  • Die volgende aktiwiteit is ‘n groepprojek wat jy in jou portefeulje kan plaas. Jou opvoeder sal jou van die nodige folio voorsien en aan jou verduidelik presies wat van jou verwag word.
  • Verdeel in groepe van vier of vyf en lees dan die opdrag noukeurig deur.
  • Julle groep moet minstens drie blomwinkels of blommeverkopers in jul omgewing besoek. Julle taak is om uit te vind watter bloemiste of blommeverkoper die goedkoopste is.

Hou die volgende in gedagte as riglyne:

  1. Kyk net na ‘n bos gemengde blomme.
  2. Neem die getal blomme in elke bos in aanmerking.
  3. Sê in jul verslag wie die goedkoopste is en motiveer hoekom julle so sê. Onthou om al jul bewerkings te wys!
  4. Werk netjies en handig jul projek betyds in.

Aktiwiteit 10:

Om probleme in konteks te kan oplos [lu 1.6]

1. Verdeel in groepe van drie. Vra jul opvoeder vir die nodige folio en los die volgende probleme sonder die gebruik van ‘n sakrekenaar op:

  • 2 924 toeskouers moet per bus na ‘n sokkerstadion vervoer word. As elke bus 68 passasiers kan vervoer, hoeveel busse is nodig om almal na die stadion te neem?
  • 55 opvoeders is per taxi na dieselfde stadion. As hul altesaam R2 475 vir die rit moes betaal, watter bedrag moes elke opvoeder vir ‘n taxi-bestuurder gee?
  • ‘n Klomp rugbyspelers het besluit om hul maats wat sokker speel te gaan ondersteun. As daar altesaam 2 010 rugbyspelers was, hoeveel rugbyspanne het na die sokkerwedstryde gaan kyk?

2. Kontroleer jul antwoorde met behulp van ‘n sakrekenaar.

3. Vergelyk jul oplossings met dié van die ander groepe in die klas.

4. Bespreek die verskille en/of ooreenkomste tussen die verskillende metodes wat gebruik is.

Aktiwiteit 11:

Om die gelykwaardigheid en geldigheid van verskillende voorstellings van dieselfde probleem d.m.v. vergelyking en bespreking te bepaal [lu 2.6]

  • In die vorige aktiwiteit het julle jul eie strategieë en metodes gebruik om die probleme op te los. In die volgende aktiwiteit is die antwoorde reeds bereken. Werk nou saam met ’n maat en verduidelik vir mekaar die verskillende oplossings vir die probleem:

Daar is 7 310 boeke in die skoolbiblioteek. Die bibliotekaresse wil 34 boeke op elke rak pak. Hoeveel rakke het sy nodig?

1. Ek bereken my antwoord deur herhaalde aftrekking.

Ek weet 34 × 100 = 3 400.

Dus: 7 310

- 3 400 (100)

3 910

- 3 400 (100)

510

- 340 (10)

170

- 170 (5)

- - -

Die antwoord is dus 100 + 100 + 10 + 5 = 215

2. Ek moet 7 310 ÷ 34 bereken. Ek doen dit deur te vermenigvuldig.

34 × 100 = 3 400, so 34 × 200 = 6 800

7 310 – 6 800 = 510

34 × 10 = 340

510 – 340 = 170

34 × 5 = 170

170 – 170 = 0

Die kwosiënt is dus 200 + 10 + 5 = 215

  1. 7 310 = (3 400 + 3 400) + 340 + 170

Dus: (3 400 ÷ 34) + (3 400 ÷ 34) + (340 ÷ 34) + (170 ÷ 34)

= 100 + 100 + 10 + 5

= 215

6. Is daar nog ’n metode waaraan julle kan dink om 7 310 ÷ 34 te bereken?

7 Verduidelik die metode by nr. 5 vir jou klasmaats. (Verbeel jou JY is die opvoeder!)

8. Watter van die metodes hierbo verkies jy?

Aktiwiteit 12:

Om te bereken deur geselekteerde bewerkings te gebruik [lu 1.8.5]

1. Jy het nou na ‘n verskeidenheid van metodes gekyk wat ons vir deling kan gebruik. Kom ons konsentreer nou op net een van hulle. Vind die kwosiënt van die volgende deur die metode soos by nr. 5 op die vorige bladsy te gebruik:

Questions & Answers

How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 5' conversation and receive update notifications?

Ask