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Graad 4

Lewe en lewenswyse

Module 9

Die groei van plante


Om die groei van plante in verskillende omstandighede te vergelyk

[lu 1.1, 1.2, 1.3]

Die habitat van ‘n plant word bepaal deur die soort grond en die klimaatstreek waar dit die beste groei. Sommige plante hou van droë grond in ‘n warm gebied en het dus nie baie water nodig om te groei nie. Ander plante hou weer van nat grond in koue streke, omdat hulle baie water nodig het om te oorleef.


Kom ons laat ‘n plantjie groei. Bring verskillende sade skool toe. Plant hulle in goedgedreineerde grond in ‘n plantbakkie.

Werk in groepe van ses. Elke kind bring ‘n plantbakkie en ‘n paar saadjies. Probeer om sade soos boontjies, sonneblomme en mielies te bring, want hulle groei baie maklik.

Gebruik ses plantbakkies vir 12 sade en plant twee sade in elke bakkie.

Sit al die bakkies behalwe een in die sonlig en gee hulle gereeld water.

Los die een bakkie sonder water in ‘n donker hoek.

Gebruik die ander saadjies wat oorbly om ‘n prente-collage te maak.

Wanneer die plantjie mooi groot is, haal dit uit die grond om te bestudeer en met jou maat s’n te vergelyk. Droog die beste plante tussen ou telefoongidsbladsye uit en plak dit versigtig op ‘n papier. Skryf nou die byskrifte van elke deeltjie van die plant, bv. wortels, blare, stingel en blom netjies by.

Kom ons vergelyk nou die plante met die een wat nie sonlig en water gekry het nie. Teken die plante en skryf die gevolgtrekking waartoe jy kom onder die tekening neer.

Met sonlig en water

Sonder sonlig en water


LU 1

WETENSKAPLIKE ONDERSOEK Die leerder is in staat om met selfvertroue op  weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Dit is duidelik wanneer die leerder:

1.1   ondersoek beplan;

1.2   ondersoek uitvoer en data versamel;

1.3       data evalueer en bevindings kommunikeer.


Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
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
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket 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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