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Natuurwetenskappe

Graad 4

Materie en stowwe

Graad 4

Vesels en materiale

Aktiwiteit:

Om die gebruik van materie, veral vesels en materiale, te ondersoek

[lu 1.2.1]

Ons kry verskillende soorte vesels: dié wat deur mense gemaak word en dié wat natuurlik is, bv. van plante en diere.

Wat noem ons mense wat klere ontwerp?

Die ontwerper moet bepaal wat die behoefte van ‘n kledingstuk is, voordat hulle dit ontwerp. As dit bv. vir brandweermanne ontwerp word, moet dit van materiaal gemaak word wat brandbestand is, of as dit mense teen koue moet beskerm, moet dit van dikker materiaal gemaak word.

Probeer klein stukkies van die volgende soorte materiale in die hande kry, plak dit op 'n vel papier en gee voorbeelde waar hierdie tipe kledingstukke gebruik sal word.

Wees nou kreatief en ontwerp ‘n spesiale hoed vir ‘n man wat:

1. in ‘n woestyn moet opgrawings doen;

2. in ‘n klam woud slange moet bestudeer;

3. in ‘n ondergrondse myn werk;

4. in ‘n konsert die rol van ‘n haas moet speel.

Skryf by elke prentjie die soort materiaal wat jy gaan gebruik, neer.

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.

Memorandum

Iemand wat klere ontwerp, is ‘n mode-ontwerper

  • Klein stukkies materiale:
  • Laat leerders self, of in groepe, besluit waar hierdie materiale gebruik sal word.
  • Hoed: teken ‘n ontwerp in elke blokkie

Questions & Answers

what is homeostasis?
Samuel Reply
what's physiology
AminchiSunday Reply
what is physiology
AminchiSunday
physically is the study of the function of the body
Najaatu
that is what I want ask
YAU
u are wright
YAU
pls what are the main treatment of hiccups
YAU
physiology is the study of the function of the body
Najaatu
hiccups happen when something irritates the nerves that course your diaphragm to contract
Najaatu
how did hypothalamus manege to control all activities of the various hormones
malual
how can I treat pain a patient feels after eating meals
Namuli Reply
how do I treat a three year old baby of skin infection?
Okocha Reply
It depends on the type of infection. Bacterial, fungal, parasitic or viral?
schler
if you can share the sign ad symptoms of the skin infection then u geh the treatment cox they're different sign ad symptoms of skin infection with different treatment
Sa
prostaglandin and fever
Maha Reply
yes
rayyanu
welcome sir
rayyanu
prostaglandin E2 is the final mediator.
Lemlem
prostaglandin E2 is the final mediator of fever.
Lemlem
yes
Agabi
good evening
Jediel
Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
what
Renee
what is this
Renee
is a drug
Kamara
of anti-ulcer
Kamara
Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
what is anatomy
Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
please why 37 degree selcius normal temperature
Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
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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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