<< Chapter < Page Chapter >> Page >

Wiskunde

Graad 4

Meting, ruimte en vorms (meetkunde)

Module 11

Herken en visualiseer 3-dimensionele voorwerpe uit die omgewing

Aktiwiteit 1:

  • Om 3-dimensionele voorwerpe uit die omgewing te herken, te visualiseer en te benoem [LU 3.1]
  • Om hulle te beskryf, uit te sorteer en te vergelyk [LU 3.2]

Prismas, reghoekige prismas, sfere, silinders, piramides, en ander voorwerpe kom oral om ons voor.

1. Bestudeer die volgende drie-dimensionele voorwerpe om hulle name te leer ken en om hulle te kan herken om daardeur in staat te wees om soortgelyke voorwerpe in die wêreld om ons te herken en te benoem:

2. Voorwerpe uit die wêreld rondom ons: Probeer om die 3-D voorwerpe te teken en te benoem:

Item Tekening Geometriese term vir die voorwerp
Krieketbal
Blokkie suiker (klont)
Blikkie hondekos
Roomyshorinkie
Dosie vuurhoutjies
Pak graanvlokkies
Driehoekige doos lekkergoed

3. Meer vorms en voorwerpe.

3.1 Skryf die naam van elk van die volgende (soliede) voorwerpe onder die korrekte geometriese term neer: die son; 'n stuk spaghetti; 'n blokkie ys; 'n gewone kers; die steel van 'n tuinhark; 'n boek; 'n lemoen; 'n baksteen; 'n blok margarien. Dink aan nog meer en skryf hulle name ook in die kolomme, veral in dié kolomme wat effens leeg lyk.

3.2 Vergelyk jou lyste met dié van jou maats. Indien jy iets teëkom waaraan jy nie gedink het nie, kan jy dit gerus by jou lys voeg.

Sfeer Silinder Kubus Kubusvormig (reghoekige prisma) Piramide Keël

4. Skryf die korrekte geometriese term langsaan elk van die volgende:

  • 'n woonstelblok
  • die muur van 'n rondawel
  • 'n wigwam / tepee
  • die dak van 'n rondawel
  • die rotsblokke by Stonehenge

5. Kyk weer na die voorwerpe. Hoeveel oppervlakke het hulle? Is die oppervlakke plat of gerond? Wat is die vorm van die oppervlakke? Vul die ontbrekende woorde in om die voorwerpe te beskrywe:

Voorwerp Aantal oppervlakke Plat of geronde oppervlakke Vorm van die oppervlakke
'n Doos koringvlokkies
'n Bal
‘n Blokkie suiker
'n Kers
'n Piramide Sye:Basis:

Aktiwiteit 2:

Om 2-D fatsoene en 3-D voorwerpe te herken, te visualiseer en te benoem [LU 3.1]

Om 2-D fatsoene en 3-D voorwerpe te beskryf, uit te sorteer en te vergelyk [LU 3.2]

Om 2-D fatsoene en 3-D voorwerpe en patrone uit tangramme te skep [LU 3.5]

  • Twee-dimensionele vorms is plat. Ons kan hulle op 'n vel papier teken . Veelhoeke is geslote geometriese vorms met reguit sye.

1. Veelhoeke : Gebruik 'n potlood en 'n liniaal om te oefen om hierdie vorms te teken.

3 sye: Driehoeke

4 sye: Vierhoeke

5 sye: Vyfhoeke (Wanneer al die sye ewe lank is, is dit 'n reëlmatige vyfhoek; as hulle verskillende lengtes het, is dit 'n onreëlmatige vyfhoek.)

6 sye: Seshoek/Heksagoon

7 sye: Heptagoon

(Probeer om een gewone sewe-sydige vorm te teken.)

2. Sirkels

2.1 Sirkels is nie veelhoeke nie. Kyk na die sirkel hier onder en vergelyk dit met die veelhoeke wat ons bespreek het:

  • Voltooi: Die sirkel is nie 'n veelhoek nie, omdat __________________

3. Probeer nou om aan 'n voorbeeld uit jou omgewing te dink van elke fatsoen waaroor ons gesels het. Onthou dat almal plat moet wees, omdat hulle tweedimensioneel is. Vul die padtekens wat jy om jou sien en langs die pad waarneem wanneer jy skool toe gaan in die fatsoene hier onder in.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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
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
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 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11100/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 4' conversation and receive update notifications?

Ask