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Natuurwetenskappe

Grrad 4

Materie en stowwe

Module 53

Die gebruik van materie in ons huise

Aktiwiteit:

Om saam te kan gesels oor die gebruik van materie in ons huise, veral plastiek

[lu 1.1.1]

Plastiek

Dink gou aan enige gebruik vir ‘n plastieksak. Moenie net aan gewone alledaagse dinge dink nie, wees kreatief en dink oulike idees uit. Hoeveel gebruike kon julle groep in 2 minute uitdink? Gee terugvoering aan die klas.

Probeer die volgende (1):

Neem ‘n joghurtbakkie, ‘n rekkie en sommige van die volgende materiale: kombuispapier, karton, wol, katoen, tinfoelie, plastiek, ‘n servet. Neem elkeen van die materiale, plaas dit op die joghurtbakkie en bind die rekkie om. Drup ‘n teelepel water op elke stuk materiaal en kyk wat gebeur. Syfer die water deur?

Wat was die beste materiaal om die water uit te hou?

Probeer die volgende (2):

Kom ons maak ‘n valskermpie. Gebruik die volgende materiale om ‘n valskerm te maak en gooi dit elke keer van dieselfde hoogte af: koerantpapier, plastiek, katoensakdoek, karton, sneesdoekie, skryfpapier. Kyk watter materiale werk die beste.

Skryf die lede van julle gesin se name onder mekaar neer. Skryf die plastiekitems wat hulle daagliks gebruik, langs elkeen se naam neer. Wie gebruik die meeste plastiekitems in julle huis?

Ongelukkig neem dit baie lank vir plastiek om te ontbind. Die regering het vanaf 2003 standpunt hieroor ingeneem en alle gratis plastieksakke by winkels verbied. Kliënte moet nou hulle eie inkopiesakke saamneem wanneer hulle inkopies doen, of moet nuwes koop.

Hou ‘n redenaarskompetisie om hierdie aspek te bespreek.

Ontwerp ‘n nuwe soort winkeldrasak om die probleme wat bespreek is, op te los.

Plak alle soorte plastiek wat jy in jou huis kan kry op 'n vel papier

Tot onlangs was die plastieksakke ‘n groot probleem in ons pragtige land, want dit het ons land ontsier deurdat dit oral rondgelê het. Dink net waar hierdie sakke oral beland het en waarvoor dit alles gebruik en misbruik is.

Jy tel ‘n plastieksak in die straat op. Dit is vuil, geskeur en vol gemors. Die plastieksak se naam is Plassie. Teken nou ‘n strokiesprent oor die lewe wat Plassie tot nou toe gelei het: ‘n lewe vol gevaar, met baie wedervaringe, maar tog het hy oral ‘n goeie doel gedien.

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

1.1 ondersoeke beplan, bv.:

1.1.1 stel aktiwiteite voor om met die materiaal te probeer doen.

Memorandum

Probeer die volgende (1)

  • Laat leerders self die eksperiment doen.

Probeer die volgende (2)

  • Laat leerders self die eksperiment doen.

Questions & Answers

What is inflation
Bright Reply
a general and ongoing rise in the level of prices in an economy
AI-Robot
What are the factors that affect demand for a commodity
Florence Reply
price
Kenu
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
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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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