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Tegnologie

Graad 4

Skep jou eie ontbytkos

Module 5

Nog ‘n probleem en oplossing

Probleem en oplossing

Aktiwiteit 1

Om die uitwerking van ‘n probleem op mense te ondersoek [lu 1.1, 3.1, 3.2, 3.3]

Die oorsaak van ‘n probleemsituasie

Lees die strokiesverhaal en bespreek die situasie wat uitgebeeld word.

Wat is die probleem? Skryf die woorde hieronder in die regte volgorde om uit te vind.

soggens eet gesonde Hulle nie pap bord ‘n nie

Hulle .......................................................................

.................................................................................

Hou ‘n klasgesprek oor die volgende vrae:

  • Waarom ly mense soms honger?
  • Watter nadele kan die probleem vir mense inhou?
  • Watse kos sit verskillende kultuurgroepe soggens vir ontbyt voor?

Aktiwiteit 2

Om ‘n ontwerpopdrag uit te voer [lu 1.4]

Dink aan ‘n manier om hierdie opdrag uit te voer.

Ontwerp ...................................................................................( wat ) vir

....................................................................................................( wie ) om

.......................................................................................( wanneer ) by die

.................................................................................( plek ) gesond te eet.

Aktiwiteit 3

Om verskillende verpakkings te ontleed [lu 1.2]

Versamel ‘n aantal leë verpakkings van verskillende vorms en groottes. Skets drie van die verpakkings van jou keuse.

Aktiwiteit 4

Om voorstelle vir ‘n nuwe verpakking voor te lê [lu 1.5, 1.6]

Hierdie vrae sal jou help om die mees geslaagde verpakking aan te wys:

  • Van watter tipe verpakking hou jy die meeste/minste? Waarom?
  • Van watter ontbytkos hou jy die meeste/minste? Waarom?
  • Watter invloed het kleur, lettertipe en prente op jou keuse?
  • Vir wie gaan jy die ontbytkos ontwerp?
  • Watter soort ontbytkos gaan jy maak?
  • Wat het jou laat besluit om dié ontbytkos te maak?

JOU KEUSE

Assessering

Leeruitkoms 1: tegnologiese prosesse en vaardighede

Die leerder is in staat om tegnologiese prosesse en vaardighede eties en verantwoordelik toe te pas deur toepaslike inligtings- en kommunikasietegnologie te gebruik.

Assesseringstandaard

Dis duidelik wanneer die leerder:

1.1 uitvind, met hulp, oor die agtergrondkonteks (bv. mense, omgewing) wanneer ‘n probleem, behoefte of geleentheid gegee word;

1.2 uitvind oor bestaande produkte wat relevant vir ‘n probleem, behoefte of geleentheid is, en die hoofontwerpsaspekte (bv. vir wie dit is, waarvoor dit is, hoe dit lyk) identifiseer wat dit geskik as ’n oplossing maak;

1.4 met bystand ’n kort en duidelike stelling (ontwerpopdrag) skryf of kommunikeer vir die ontwikkeling van ‘n produk vir ‘n gegewe doel;

1.5 minstens twee moontlike oplossings vir die probleem of behoefte voorstel wat met die ontwerpopdrag en met gegewe spesifikasies en beperkings (bv. mense, doel, omgewing) skakel, en dit aanteken;

1.6 een van hierdie oplossings kies en redes vir die keuse gee.

Leeruitkoms 3: tegnologie, samelewing en omgewing

Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap, tegnologie, die samelewing en die omgewing oor tyd heen te toon.

Assesseringstandaard

Dis duidelik wanneer die leerder:

  • beskryf hoe plaaslike kulture wetenskaplike beginsels of tegnologiese produkte vir spesifieke redes gebruik het en steeds gebruik;
  • menings lug oor hoe tegnologiese produkte mense se lewens makliker maak;

3.3 redes noem waarom sekere groepe mense moontlik ’n agterstand kan hê wanneer hulle tegnologiese produkte gebruik.

Questions & Answers

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
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
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
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
Do you know which machine is used to that process?
s.
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Tegnologie graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11098/1.1
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