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Wiskunde

Meting en tyd

Oppervlakte

Opvoeders afdeling

Memorandum

1.1 22 m + 11 m + 33 m + 40 m + 28 m + 68 m = 202 m

1.2 202 pale

2. 112 m × 75 m = 8 400 m²

Koste: 8 400 × R1,20 = R10 080

3. 45 m × 45 m = 2 025 m²

R56 679,75 ÷ 2 025 = R27,99/m²

4. 225 cm × 75 cm = 16 875 cm²

2,25 m × 0,75 m = 1,6875 m²

5. 50,32 m² ÷ 7,4 m = 6,8 m

Leerders afdeling

Inhoud

Aktiwiteit: om probleme in konteks op te los [lu 1.6.2]

Om oppervlakte te bereken deur te ondersoek en te skat [lu 4.8.2]

  • Vir hierdie aktiwiteit moet julle in groepe van drie verdeel. Julle mag ‘n sakrekenaar gebruik om die probleme op te los. Werk mooi netjies en toon ‘n duidelike uiteensetting van die antwoorde. Lekker kopkrap!

1. ’n Boer moet ’n kamp vir kalwers met draad omhein.

1.1 Bereken hoeveel draad nodig is om die kamp te omhein.

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1.2 Indien die pale van die draad 1 meter uitmekaar geplant word, hoeveel pale is nodig?

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2. Die nuwe hokkieveld moet met grassaad gesaai word. Die afmetings van die veld is 112 m by 75 m. Indien die grassaad R1,20 per m 2 kos, wat beloop die koste van die hele projek?

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3. Indien ’n vierkantige speelterrein met ’n lengte van 45 m geteer word, is die totale koste R56 679,75. Wat is die koste van teer per 1 m 2 ?

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4. ’n Gedeelte van die badkamermuur van 2,25 m by 0,75 m moet met nuwe teëls bedek word. Die teëls is vierkantig met ’n lengte van 15 cm. Hoeveel teëls is nodig?

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5. ’n Klaskamer het ’n oppervlakte van 50,32 m 2 . Indien die lengte 7,4 m is, wat is die breedte?

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ASSESSERING: PROBLEEMOPLOSSING

KRITERIA KODE
Netheid en organisasie Werk is slordig en ongeorganiseerd. Dit is georganiseerd, maar moeilik leesbaar. Dit is netjies en georganiseerd en maklik leesbaar. Netjiese, duidelik uiteengesette werk; duidelik leesbaar.
Logiese redenering Daar is baie min bewyse van logika. Bietjie logika kom na vore. Gebruik effektiewe wiskundige redenering. Gebruik verfynde logika en redenasie.
Korrektheid en berekenings Al die antwoorde is verkeerd bereken. Baie foute is begaan. Min foute is gemaak. Antwoorde is almal korrek bereken.

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.6: Dit is duidelik wanneer die leerder probleme oplos in konteks, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingskwessies, te bevorder soos:

1.6.2: meting in konteks van Natuurwetenskappe en Tegnologie;

Leeruitkomste 4: Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.

Assesseringstandaard 4.8: Dit is duidelik wanneer die leerder by benadering ondersoek en bepaal (alleen en/of as ‘n lid van ‘n groep of span):

4.8.2: oppervlakte van veelhoeke (m.b.v. vierkantroosters) ten einde reëls vir die berekening van oppervlakte van vierkante en reghoeke te ontwikkel.

Questions & Answers

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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,
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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)
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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
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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
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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 .
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Answer
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c
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suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
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Source:  OpenStax, Wiskunde graad 6. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11072/1.1
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