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Wiskunde

Getalbegrip, optelling en aftrekking

Optelling

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]

Om strategieë te gebruik om oplossings te kontroleer [lu 1.11]

1. Ons het nou na ‘n paar tegnieke gekyk om antwoorde te bereken. In ons alledaagse lewe kry ons daagliks met “probleme” soos diè hieronder te doen. As ons dit nie kan oplos nie, sal ons bitter min berekeninge met vertroue kan doen. Deel in groepe van drie en kyk of julle die volgende probleme kan oplos. Jou opvoeder sal jul van die nodige folio voorsien.

1.1 Dimitri en sy vriende besluit om by die “Bites-and-Bits” restaurant te gaan eet.

Die spyskaart lyk so:

Toebroodjies:

Kaas R9,99Ham en Kaas R12,99Eier R11,99Tamatie, ham en kaas R15,99Hoender R15,99

Koeldrank: Coke, Fanta, Sprite, Cream Soda R4,95

Melkskommel: Aarbei, Piesang, Sjokolade R8,95

  • Dimitri bestel ‘n ham-en-kaastoebroodjie en ‘n aarbei melkskommel.
  • Vusi bestel ‘n hoendertoebroodjie en ‘n Coke.
  • Nancy bestel ‘n eiertoebroodjie en ‘n sjokolade melkskommel.
  • As Dimitri aanbied om die rekening te betaal, wat gaan die uiteet hom kos?

1.2 Mnr. Zuma, hoof van die Laerskool Vasbyt, besluit om die saal se vloer met nuwe teëls te vervang. Hy koop dit en vra die leerders om dit saal toe te dra.

  • Die Graad 7’s dra 1 893 teëls; die Graad 6’e bring 976 teëls; die Graad 5’s dra 824 teëls en die Graad 4’s bring 769 teëls na die saal. Hoeveel teëls is altesaam na die saal gedra?

2. Verduidelik aan die res van die klas hoe julle groep die antwoorde bereken het.

3. Vergelyk jul metodes. Hoe verskil hulle van mekaar?

4. Gebruik ‘n sakrekenaar om die antwoorde te kontroleer.

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: Dit is duidelik wanneer die leerder probleme in konteks oplos, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingskwessies, te bevorder:

1.6.1 finansiële kontekste (insluitend koop en verkoop, wins en verlies, en eenvoudige begrotings);

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 optelling en aftrekking in kolomme;

Assesseringstandaard 1.11: Dit is duidelik wanneer die leerder ‘n verskeidenheid strategieë gebruik om oplossings te kontroleer en die redelikheid van oplossings te beoordeel.

Questions & Answers

how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
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
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
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 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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