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Graad 4

Lewe en lewenswyse

Module 6

Die tassintuig


Om meer oor die tassintuig te leer

[lu 2.1]

Die tassintuig laat jou weet hoe sekere dinge teen jou vel voel. Wanneer jy aan iets raak, stuur senuwees boodskappe na jou brein. As die gevoel aaklig is, stuur die brein die boodskap om jou hand weg te neem. As dit ‘n lekker gevoel is, stuur die brein die boodskap dat jy maar jou hand daar kan hou.

Jou tassintuig sê vir jou of iets warm of koud, hard of sag, grof of glad is.

Dit kan ook vir jou sê of iets jou seermaak, dan voel jy die pyn.

Beantwoord die volgende vrae:

Hoe voel jy oor pyn?

Kan pyn goed wees?

Hoekom sê jy so?

In die dierewêreld gebruik tarantula-spinnekoppe hul tassintuie wanneer hulle ‘n prooi vang, want hulle is jagters van die nag.

‘n Insek se tassintuig is sy beste gevoelsorgaan. Hy kry sy inligting oor die temperatuur en die omgewing deur sy voelers.



LU 2

KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.


Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2       inligting kategoriseer.



Beantwoord die volgende vrae:

  • Hoe voel jy oor pyn? Leerders sal verskillende antwoorde gee.
  • Kan pyn goed wees? Ja, beslis!
  • Hoekom sê jy so? As jy voel jy brand op ‘n stoof se plaat, sal jy jou hand vinnig wegruk!

Questions & Answers

how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
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
what is system testing
what is the application of nanotechnology?
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
anybody can imagine what will be happen after 100 years from now in nano tech world
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
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
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, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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