<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Graad 4

Materie en stowwe

Module 56

Die waarde van boumateriaal as 'n hulpbron

Aktiwiteit:

Om die waarde van boumateriaal as ‘n hulpbron in die bou van huise te leer ken

[lu 1.2.1, 2.2.1, 3.2]

Boumateriale

Wanneer ‘n huis gebou word, word materiale gebruik wat natuurlik is of wat gemaak moes word. Hier is ‘n prentjie van ‘n huisie. Kleur die natuurlike materiale geel in en die ander materiale rooi.

Hout

Een van die natuurlike produkte wat gebruik is om die huisie te bou, is hout.

Hout is ‘n wonderlike hulpbron vir die mens. Deel die klas in ses groepe. Gee drie minute kans om alles te lys wat van hout gemaak is in die:

klas

jou kamer by die huis

jou sitkamer by die huis

die kombuis

op die skoolterrein

I

in die skoolsaal

1. Watter gevolgtrekking kan jy hieruit maak?

My gevolgtrekking is: ____________________________

  1. Skryf aan Sappi om plakkate aan julle klas te stuur.

Bakstene

Om mee te skryf

Duisende jare gelede het mense allerhande maniere gebruik om te skryf. Hulle het materiale van dierprodukte, klippe, plante en klei gebruik. Hulle het op papirus, bas, dierevelle en rotse geskryf en tekeninge gemaak.

Vandag is dit baie makliker. Ons gaan net eenvoudig winkels toe en koop die wonderlikste skryfgoed wat ons wil hê. Al hierdie goed word van verskillende soorte materie gemaak.

Dink aan iemand uit ons verre verlede wat jou nog altyd gefassineer het. Stuur ‘n kort SMS-boodskap aan hom/haar om te bewys hoe die tegnologie oor ‘skryf’ deur die jare verander het.

Assessering

LEERUITKOMS 1: WETENSKAPLIKE ONDERSOEK

Die l eerder 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.

Assesseringstandaard

Dis duidelik wanneer die leerder

1.2 ondersoeke uitvoer en data versamel, bv.:

1.2.1 merk ooglopende veranderings of interessante besonderhede op en lewer kommentaar daarop.

LEERUITKOMS 2: KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewings- kennis toe.

Assesseringstandaard

Dis duidelik wanneer die leerder

2.2 inligting kategoriseer, bv.:

2.2.1 volg instruksies om diere in groepe van dié met twee bene, met vier bene en met meer as vier bene te sorteer.

LEERUITKOMS 3: WETENSKAP, DIE SAMELEWING EN DIE OMGEWING Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon .

Assesseringstandaard

Dis duidelik wanneer die leerder

3.2 die impak van wetenskap en tegnologie verstaan.

Memorandum

Boumateriale:

  • Natuurlike materiale: kleur dit geel in
  • Ander materiale: kleur dit rooi in

Om mee te skryf:

  • Kinders ken nie die outydse maniere van skryf nie. Indien daar tyd is, lees outydse artikels, stories of kyk video’s wat dit mooi uitbeeld.
  • Die SMS-boodskap is iets wat hulle baie goed ken!

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

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

Ask