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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

so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
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
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
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele 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, Tegnologie graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11098/1.1
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