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  • GETIntPhaseMaths display tagshide tags

    This module is included inLens: Siyavula: Mathematics (Gr. 4-6)
    By: Siyavula

    Review Status: In Review

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Om probleme in konteks op te los

Module by: Siyavula Uploaders. E-mail the author

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.

Figure 1
Figure 1 (graphics1.png)

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 m2 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 m2?

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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 m2. Indien die lengte 7,4 m is, wat is die breedte?

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ASSESSERING: PROBLEEMOPLOSSING

Table 1
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.

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Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

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What are tags? tag icon

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